src/modules/rlm_ldap/rlm_ldap.c

   1 /*
   2  * rlm_ldap.c LDAP authorization and authentication module.
   3  *
   4  *
   5  * This module is based on LDAP patch to Cistron radiusd by James Golovich
   6  * <james@wwnet.net>, which in turn was based mostly on a Mysql+Cistron patch
   7  * from <oyarzun@wilmington.net>
   8  *
   9  * 17 Jan 2000, Adrian Pavlykevych <pam@polynet.lviv.ua>
  10  *      - OpenLDAP SDK porting, basic TLS support, LDAP authorization,
  11  *        fault tolerance with multiple LDAP server support
  12  * 24 May 2000, Adrian Pavlykevych <pam@polynet.lviv.ua>
  13  *      - Converting to new configuration file format, futher improvements
  14  *        in fault tolerance, threaded operation
  15  * 12 Dec 2000, Adrian Pavlykevych <pam@polynet.lviv.ua>
  16  *      - Added preliminary support for multiple instances
  17  *      - moved all instance configuration into dynamicly allocated structure
  18  *      - Removed connection maintenance thread and all attempts for multihreading
  19  *        the module itself. OpenLDAP SDK is not thread safe when used with shared
  20  *        LDAP connection.
  21  *      - Added configuration option for defining LDAP attribute of user object,
  22  *        which controls remote access.
  23  * 16 Feb 2001, Hannu Laurila <hannu.laurila@japo.fi>
  24  *      - LDAP<->RADIUS attribute mappings are now read from a file
  25  *      - Support for generic RADIUS check and reply attribute.
  26  * Jun 2001, Kostas Kalevras <kkalev@noc.ntua.gr>
  27  *      - Fix: check and reply attributes from LDAP _replace_ existing ones
  28  *      - Added "default_profile" directive, which points to radiusProfile
  29  *        object, which contains default values for RADIUS users
  30  *      - Added "profile_attribute" directive, which specifies user object
  31  *        attribute pointing to radiusProfile object.
  32  * Nov 2001, Kostas Kalevras <kkalev@noc.ntua.gr>
  33  *      - Added support for adding the user password to the check. Based on
  34  *        the password_header directive rlm_ldap will strip the
  35  *        password header if needed. This will make support for CHAP much easier.
  36  *      - Added module messages when we reject a user.
  37  *      - Added ldap_groupcmp to allow searching for user group membership.
  38  *      - Added ldap_xlat to allow ldap urls in xlat strings. Something like:
  39  *        %{ldap:ldap:///dc=company,dc=com?cn?sub?uid=user}
  40  * Nov 2001, Gordon Tetlow <gordont@gnf.org>
  41  *      - Do an xlat on the access_group attribute.
  42  * Dec 2001, Kostas Kalevras <kkalev@noc.ntua.gr>
  43  *      - Added ldap caching for the default/regular profiles and group entries.
  44  *      - Fixed a memory leak in ldap_xlat.
  45  *      - Removed dict_attrbyname from ldap_pairget. They are not needed.
  46  *      - Moved the radius_xlat's for filter and basedn in ldap_authenticate() to
  47  *        the right place.
  48  *      - Made the module thread safe. We create a connection pool and each thread
  49  *        will call ldap_get_conn to lock one of the ldap connections and release with
  50  *        a call to ldap_release_conn when it has finished.
  51  *      - Request only the user attributes that interest us (radius attributes,regular
  52  *        profile,user password and access attribute).
  53  * Mar 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
  54  *      - Fixed a bug where the ldap server will kill the idle connections from the ldap
  55  *        connection pool. We now check if ldap_search returns LDAP_SERVER_DOWN and try to
  56  *        reconnect if it does. Bug noted by Dan Perik <dan_perik-work@ntm.org.pg>
  57  * May 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
  58  *      - Instead of the Group attribute we now have the Ldap-Group attribute, to avoid
  59  *        collisions with other modules
  60  *      - If perform_search fails check the ld != NULL before using it. Based on a bug report
  61  *        by John <jhogenmiller@pennswoods.net>
  62  * Jun 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
  63  *      - Add the ability to do a paircmp on the check items. Add a compare_check_items boolean
  64  *        configuration directive which defaults to no. If it is set then we will do a compare
  65  *      - Add another configuration directive. access_attr_used_for_allow. If it is set to yes
  66  *        then the access_attr will be used to allow user access. If it is set to no then it will
  67  *        be used to deny user access.
  68  *      - Remember to free inst->atts in ldap_detach()
  69  *      - Add a forgotten ldap_free_urldesc in ldap_xlat()
  70  *      - Add a variable locked in the LDAP_CONN structure. We use this to avoid deadlocks. The mutex
  71  *        we are using is of type fast and can deadlock if the same thread tries to relock it. That
  72  *        could happen in case of calls to xlat.
  73  *      - When ldap_search returns NO_SUCH_OBJECT don't return fail but notfound
  74  * Jul 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
  75  *      - Fix the logic when we get an LDAP_SERVER_DOWN or we have conn->ld == NULL in perform_search
  76  *      - Try to minimize the penalty of having the ldap server go down. The comments before
  77  *        MAX_FAILED_CONNS_* definitions should explain things.
  78  *      - Check for a number of error codes from ldap_search and log corresponding error messages
  79  *        We should only reconnect when that can help things.
  80  *      - In ldap_groupcmp instead of first searching for the group object and then checking user
  81  *        group membership combine them in one ldap search operation. That should make group
  82  *        membership checks a lot faster.
  83  *      - Remember to do ldap_release_conn and ldap_msgfree when we do paircmp and the result is reject
  84  * Aug 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
  85  *      - Add support for group membership attribute inside the user entry in ldap_groupcmp. The attribute
  86  *        can either contain the name or the DN of the group. Added the groupmembership_attribute
  87  *        configuration directive
  88  *      - Move the ldap_{get,release}_conn in ldap_groupcmp so that we hold a connection for the minimum time.
  89  *      - Now that ldap_groupcmp is complete we really don't need access_group. Removed it.
  90  *      - Remember to free groupmembership_attribute in ldap_detach
  91  *      - Don't delete existing generic attributes in ldap_pairget when adding new ones. Since generic attributes
  92  *        have operators we don't need to try to be cleaver.
  93  * Sep 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
  94  *      - Fix a crash in ldap_pairget when the attribute value is larger than the buffer size
  95  */
  96 static const char rcsid[] = "$Id$";
  97
  98 #include "autoconf.h"
  99
 100 #include        <sys/types.h>
 101 #include        <sys/socket.h>
 102 #include        <sys/time.h>
 103 #include        <netinet/in.h>
 104
 105 #include        <stdio.h>
 106 #include        <stdlib.h>
 107 #include        <netdb.h>
 108 #include        <pwd.h>
 109 #include        <time.h>
 110 #include        <ctype.h>
 111 #include        <string.h>
 112
 113 #include        <lber.h>
 114 #include        <ldap.h>
 115
 116 #include        <errno.h>
 117 #include        <unistd.h>
 118 #include        <pthread.h>
 119
 120 #include        "libradius.h"
 121 #include        "radiusd.h"
 122 #include        "conffile.h"
 123 #include        "modules.h"
 124 #include        "rad_assert.h"
 125
 126
 127 #define MAX_AUTH_QUERY_LEN      256
 128 #define MAX_GROUP_STR_LEN       1024
 129 #define TIMELIMIT 5
 130
 131 /*
 132  * These are used in case ldap_search returns LDAP_SERVER_DOWN
 133  * In that case we do conn->failed_conns++ and then check it:
 134  * If conn->failed_conns <= MAX_FAILED_CONNS_START then we try
 135  * to reconnect
 136  * conn->failed_conns is also checked on entrance in perform_search:
 137  * If conn->failed_conns > MAX_FAILED_CONNS_START then we don't
 138  * try to do anything and we just do conn->failed_conns++ and
 139  * return RLM_MODULE_FAIL
 140  * if conn->failed_conns >= MAX_FAILED_CONNS_END then we give it
 141  * another chance and we set it to MAX_FAILED_CONNS_RESTART and
 142  * try to reconnect.
 143  *
 144  *
 145  * We are assuming that the majority of the LDAP_SERVER_DOWN cases
 146  * will either be an ldap connection timeout or a temporary ldap
 147  * server problem.
 148  * As a result we make a few attempts to reconnect hoping that the problem
 149  * will soon go away. If it does not go away then we just return
 150  * RLM_MODULE_FAIL on entrance in perform_search until conn->failed_conns
 151  * gets to MAX_FAILED_CONNS_END. After that we give it one more chance by
 152  * going back to MAX_FAILED_CONNS_RESTART
 153  *
 154  */
 155
 156 #define MAX_FAILED_CONNS_END            20
 157 #define MAX_FAILED_CONNS_RESTART        4
 158 #define MAX_FAILED_CONNS_START          5
 159
 160 /* linked list of mappings between RADIUS attributes and LDAP attributes */
 161 struct TLDAP_RADIUS {
 162         char*                 attr;
 163         char*                 radius_attr;
 164         struct TLDAP_RADIUS*  next;
 165 };
 166 typedef struct TLDAP_RADIUS TLDAP_RADIUS;
 167
 168 typedef struct ldap_conn {
 169         LDAP            *ld;
 170         char            bound;
 171         char            locked;
 172         int             failed_conns;
 173         pthread_mutex_t mutex;
 174 } LDAP_CONN;
 175
 176 #define MAX_SERVER_LINE 1024
 177
 178 typedef struct {
 179         char           *server;
 180         int             port;
 181         int             timelimit;
 182         struct timeval  net_timeout;
 183         struct timeval  timeout;
 184         int             debug;
 185         int             tls_mode;
 186         int             start_tls;
 187         int             num_conns;
 188         int             cache_timeout;
 189         int             cache_size;
 190         int             do_comp;
 191         int             default_allow;
 192         char           *login;
 193         char           *password;
 194         char           *filter;
 195         char           *basedn;
 196         char           *default_profile;
 197         char           *profile_attr;
 198         char           *access_attr;
 199         char           *passwd_hdr;
 200         char           *passwd_attr;
 201         char           *dictionary_mapping;
 202         char           *groupname_attr;
 203         char           *groupmemb_filt;
 204         char           *groupmemb_attr;
 205         char            **atts;
 206         TLDAP_RADIUS   *check_item_map;
 207         TLDAP_RADIUS   *reply_item_map;
 208         LDAP_CONN       *conns;
 209         int             ldap_debug; /* Debug flag for LDAP SDK */
 210         char            *xlat_name; /* name used to xlat */
 211 }               ldap_instance;
 212
 213 static CONF_PARSER module_config[] = {
 214         {"server", PW_TYPE_STRING_PTR, offsetof(ldap_instance,server), NULL, NULL},
 215         {"port", PW_TYPE_INTEGER, offsetof(ldap_instance,port), NULL, "389"},
 216         /* wait forever on network activity */
 217         {"net_timeout", PW_TYPE_INTEGER, offsetof(ldap_instance,net_timeout.tv_sec), NULL, "10"},
 218         /* wait forever for search results */
 219         {"timeout", PW_TYPE_INTEGER, offsetof(ldap_instance,timeout.tv_sec), NULL, "20"},
 220         /* allow server unlimited time for search (server-side limit) */
 221         {"timelimit", PW_TYPE_INTEGER, offsetof(ldap_instance,timelimit), NULL, "20"},
 222         {"ldap_cache_timeout", PW_TYPE_INTEGER, offsetof(ldap_instance,cache_timeout), NULL, "0"},
 223         {"ldap_cache_size", PW_TYPE_INTEGER, offsetof(ldap_instance,cache_size), NULL, "0"},
 224         {"identity", PW_TYPE_STRING_PTR, offsetof(ldap_instance,login), NULL, ""},
 225         {"start_tls", PW_TYPE_BOOLEAN, offsetof(ldap_instance,start_tls), NULL, "no"},
 226         {"password", PW_TYPE_STRING_PTR, offsetof(ldap_instance,password), NULL, ""},
 227         {"basedn", PW_TYPE_STRING_PTR, offsetof(ldap_instance,basedn), NULL, NULL},
 228         {"filter", PW_TYPE_STRING_PTR, offsetof(ldap_instance,filter), NULL, "(uid=%u)"},
 229         {"default_profile", PW_TYPE_STRING_PTR, offsetof(ldap_instance,default_profile), NULL, NULL},
 230         {"profile_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,profile_attr), NULL, NULL},
 231         {"password_header", PW_TYPE_STRING_PTR, offsetof(ldap_instance,passwd_hdr), NULL, NULL},
 232         {"password_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,passwd_attr), NULL, NULL},
 233         /* LDAP attribute name that controls remote access */
 234         {"access_attr", PW_TYPE_STRING_PTR, offsetof(ldap_instance,access_attr), NULL, NULL},
 235         /* file with mapping between LDAP and RADIUS attributes */
 236         {"groupname_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,groupname_attr), NULL, "cn"},
 237         {"groupmembership_filter", PW_TYPE_STRING_PTR, offsetof(ldap_instance,groupmemb_filt), NULL, "(|(&(objectClass=GroupOfNames)(member=%{Ldap-UserDn}))(&(objectClass=GroupOfUniqueNames)(uniquemember=%{Ldap-UserDn})))"},
 238         {"groupmembership_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,groupmemb_attr), NULL, NULL},
 239         {"dictionary_mapping", PW_TYPE_STRING_PTR, offsetof(ldap_instance,dictionary_mapping), NULL, "${confdir}/ldap.attrmap"},
 240         {"ldap_debug", PW_TYPE_INTEGER, offsetof(ldap_instance,ldap_debug), NULL, "0x0000"},
 241         {"ldap_connections_number", PW_TYPE_INTEGER, offsetof(ldap_instance,num_conns), NULL, "5"},
 242         {"compare_check_items", PW_TYPE_BOOLEAN, offsetof(ldap_instance,do_comp), NULL, "no"},
 243         {"access_attr_used_for_allow", PW_TYPE_BOOLEAN, offsetof(ldap_instance,default_allow), NULL, "yes"},
 244
 245         {NULL, -1, 0, NULL, NULL}
 246 };
 247
 248 #define ld_valid                ld_options.ldo_valid
 249 #define LDAP_VALID_SESSION      0x2
 250 #define LDAP_VALID(ld)  ( (ld)->ld_valid == LDAP_VALID_SESSION )
 251
 252 #ifdef FIELDCPY
 253 static void     fieldcpy(char *, char **);
 254 #endif
 255 static VALUE_PAIR *ldap_pairget(LDAP *, LDAPMessage *, TLDAP_RADIUS *,VALUE_PAIR **);
 256 static int ldap_groupcmp(void *, REQUEST *, VALUE_PAIR *, VALUE_PAIR *, VALUE_PAIR *, VALUE_PAIR **);
 257 static int ldap_xlat(void *,REQUEST *, char *, char *,int, RADIUS_ESCAPE_STRING);
 258 static LDAP    *ldap_connect(void *instance, const char *, const char *, int, int *);
 259 static int     read_mappings(ldap_instance* inst);
 260
 261 static inline int ldap_get_conn(LDAP_CONN *conns,LDAP_CONN **ret,void *instance)
 262 {
 263         ldap_instance *inst = instance;
 264         register int i = 0;
 265
 266         for(;i<inst->num_conns;i++){
 267                 if (conns[i].locked == 0 && pthread_mutex_trylock(&(conns[i].mutex)) == 0){
 268                         *ret = &conns[i];
 269                         conns[i].locked = 1;
 270                         DEBUG("ldap_get_conn: Got Id: %d",i);
 271                         return i;
 272                 }
 273         }
 274
 275         return -1;
 276 }
 277
 278 static inline void ldap_release_conn(int i, LDAP_CONN *conns)
 279 {
 280         DEBUG("ldap_release_conn: Release Id: %d",i);
 281         conns[i].locked = 0;
 282         pthread_mutex_unlock(&(conns[i].mutex));
 283 }
 284
 285 /*************************************************************************
 286  *
 287  *      Function: rlm_ldap_instantiate
 288  *
 289  *      Purpose: Uses section of radiusd config file passed as parameter
 290  *               to create an instance of the module.
 291  *
 292  *************************************************************************/
 293 static int
 294 ldap_instantiate(CONF_SECTION * conf, void **instance)
 295 {
 296         ldap_instance  *inst;
 297         int i = 0;
 298         int atts_num = 0;
 299         int reply_map_num = 0;
 300         int check_map_num = 0;
 301         int att_map[3] = {0,0,0};
 302         TLDAP_RADIUS *pair;
 303         char *xlat_name;
 304
 305         inst = rad_malloc(sizeof *inst);
 306
 307         if (cf_section_parse(conf, inst, module_config) < 0) {
 308                 free(inst);
 309                 return -1;
 310         }
 311
 312         if (inst->server == NULL) {
 313                 radlog(L_ERR, "rlm_ldap: missing 'server' directive.");
 314                 free(inst);
 315                 return -1;
 316         }
 317
 318         inst->timeout.tv_usec = 0;
 319         inst->net_timeout.tv_usec = 0;
 320         /* workaround for servers which support LDAPS but not START TLS */
 321         if(inst->port == LDAPS_PORT)
 322                 inst->tls_mode = LDAP_OPT_X_TLS_HARD;
 323          else
 324                 inst->tls_mode = LDAP_OPT_X_TLS_TRY;
 325         inst->reply_item_map = NULL;
 326         inst->check_item_map = NULL;
 327         inst->conns = NULL;
 328
 329         paircompare_register(PW_LDAP_GROUP, PW_USER_NAME, ldap_groupcmp, inst);
 330         DEBUG("conns: %p",inst->conns);
 331
 332         xlat_name = cf_section_name2(conf);
 333         if (xlat_name == NULL) {
 334                 xlat_name = cf_section_name1(conf);
 335                 rad_assert(xlat_name != NULL); /* or all hell breaks loose */
 336         }
 337         inst->xlat_name = strdup(xlat_name);
 338         xlat_register(xlat_name,ldap_xlat,inst);
 339
 340         if (inst->num_conns <= 0){
 341                 radlog(L_ERR, "rlm_ldap: Invalid ldap connections number passed.");
 342                 free(inst);
 343                 return -1;
 344         }
 345         inst->conns = (LDAP_CONN *)malloc(sizeof(LDAP_CONN)*inst->num_conns);
 346         if (inst->conns == NULL){
 347                 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
 348                 free(inst);
 349                 return -1;
 350         }
 351         for(;i<inst->num_conns;i++){
 352                 inst->conns[i].bound = 0;
 353                 inst->conns[i].locked = 0;
 354                 inst->conns[i].failed_conns = 0;
 355                 inst->conns[i].ld = NULL;
 356                 pthread_mutex_init(&inst->conns[i].mutex, NULL);
 357         }
 358
 359         if (read_mappings(inst) != 0) {
 360                 radlog(L_ERR, "rlm_ldap: Reading dictionary mappings from file %s failed",
 361                        inst->dictionary_mapping);
 362                 radlog(L_ERR, "rlm_ldap: Proceeding with no mappings");
 363         }
 364
 365         pair = inst->check_item_map;
 366         while(pair != NULL){
 367                 atts_num++;
 368                 pair = pair->next;
 369         }
 370         check_map_num = (atts_num - 1);
 371         pair = inst->reply_item_map;
 372         while(pair != NULL){
 373                 atts_num++;
 374                 pair = pair->next;
 375         }
 376         reply_map_num = (atts_num - 1);
 377         if (inst->profile_attr)
 378                 atts_num++;
 379         if (inst->passwd_attr)
 380                 atts_num++;
 381         if (inst->access_attr)
 382                 atts_num++;
 383         inst->atts = (char **)malloc(sizeof(char *)*(atts_num + 1));
 384         if (inst->atts == NULL){
 385                 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
 386                 free(inst);
 387                 return -1;
 388         }
 389         pair = inst->check_item_map;
 390         for(i=0;i<atts_num;i++){
 391                 if (i <= check_map_num ){
 392                         inst->atts[i] = pair->attr;
 393                         if (i == check_map_num)
 394                                 pair = inst->reply_item_map;
 395                         else
 396                                 pair = pair->next;
 397                 }
 398                 else if (i <= reply_map_num){
 399                         inst->atts[i] = pair->attr;
 400                         pair = pair->next;
 401                 }
 402                 else{
 403                         if (inst->profile_attr && !att_map[0]){
 404                                 inst->atts[i] = inst->profile_attr;
 405                                 att_map[0] = 1;
 406                         }
 407                         else if (inst->passwd_attr && !att_map[1]){
 408                                 inst->atts[i] = inst->passwd_attr;
 409                                 att_map[1] = 1;
 410                         }
 411                         else if (inst->access_attr && !att_map[2]){
 412                                 inst->atts[i] = inst->access_attr;
 413                                 att_map[2] = 1;
 414                         }
 415                 }
 416         }
 417         inst->atts[atts_num] = NULL;
 418
 419         DEBUG("conns: %p",inst->conns);
 420
 421         *instance = inst;
 422
 423
 424         return 0;
 425 }
 426
 427
 428 /*
 429  * read_mappings(...) reads a ldap<->radius mappings file to inst->reply_item_map and inst->check_item_map
 430  */
 431
 432 #define MAX_LINE_LEN 160
 433 #define GENERIC_ATTRIBUTE_ID "$GENERIC$"
 434
 435 static int
 436 read_mappings(ldap_instance* inst)
 437 {
 438         FILE* mapfile;
 439         char *filename;
 440         /* all buffers are of MAX_LINE_LEN so we can use sscanf without being afraid of buffer overflows */
 441         char buf[MAX_LINE_LEN], itemType[MAX_LINE_LEN], radiusAttribute[MAX_LINE_LEN], ldapAttribute[MAX_LINE_LEN];
 442         int linenumber;
 443
 444         /* open the mappings file for reading */
 445
 446         filename = inst->dictionary_mapping;
 447         DEBUG("rlm_ldap: reading ldap<->radius mappings from file %s", filename);
 448         mapfile = fopen(filename, "r");
 449
 450         if (mapfile == NULL) {
 451                 radlog(L_ERR, "rlm_ldap: Opening file %s failed", filename);
 452                 return -1; /* error */
 453         }
 454
 455         /* read file line by line. Note that if line length exceed MAX_LINE_LEN, line numbers will be mixed up */
 456
 457         linenumber = 0;
 458
 459         while (fgets(buf, sizeof buf, mapfile)!=NULL) {
 460                 char* ptr;
 461                 int token_count;
 462                 TLDAP_RADIUS* pair;
 463
 464                 linenumber++;
 465
 466                 /* strip comments */
 467                 ptr = strchr(buf, '#');
 468                 if (ptr) *ptr = 0;
 469
 470                 /* empty line */
 471                 if (buf[0] == 0) continue;
 472
 473                 /* extract tokens from the string */
 474                 token_count = sscanf(buf, "%s %s %s", itemType, radiusAttribute, ldapAttribute);
 475
 476                 if (token_count <= 0) /* no tokens */
 477                         continue;
 478
 479                 if (token_count != 3) {
 480                         radlog(L_ERR, "rlm_ldap: Skipping %s line %i: %s", filename, linenumber, buf);
 481                         radlog(L_ERR, "rlm_ldap: Expected 3 tokens "
 482                                "(Item type, RADIUS Attribute and LDAP Attribute) but found only %i", token_count);
 483                         continue;
 484                 }
 485
 486                 /* create new TLDAP_RADIUS list node */
 487                 pair = rad_malloc(sizeof(TLDAP_RADIUS));
 488
 489                 pair->attr = strdup(ldapAttribute);
 490                 pair->radius_attr = strdup(radiusAttribute);
 491
 492                 if ( (pair->attr == NULL) || (pair->radius_attr == NULL) ) {
 493                         radlog(L_ERR, "rlm_ldap: Out of memory");
 494                         if (pair->attr) free(pair->attr);
 495                         if (pair->radius_attr) free(pair->radius_attr);
 496                         free(pair);
 497                         fclose(mapfile);
 498                         return -1;
 499                 }
 500
 501                 /* push node to correct list */
 502                 if (strcasecmp(itemType, "checkItem") == 0) {
 503                         pair->next = inst->check_item_map;
 504                         inst->check_item_map = pair;
 505                 } else if (strcasecmp(itemType, "replyItem") == 0) {
 506                         pair->next = inst->reply_item_map;
 507                         inst->reply_item_map = pair;
 508                 } else {
 509                         radlog(L_ERR, "rlm_ldap: file %s: skipping line %i: unknown itemType %s",
 510                                filename, linenumber, itemType);
 511                         free(pair->attr);
 512                         free(pair->radius_attr);
 513                         free(pair);
 514                         continue;
 515                 }
 516
 517                 DEBUG("rlm_ldap: LDAP %s mapped to RADIUS %s",
 518                       pair->attr, pair->radius_attr);
 519         }
 520
 521         fclose(mapfile);
 522
 523         return 0; /* success */
 524 }
 525
 526 static int
 527 perform_search(void *instance, LDAP_CONN *conn, char *search_basedn, int scope, char *filter,
 528                 char **attrs, LDAPMessage ** result)
 529 {
 530         int             res = RLM_MODULE_OK;
 531         int             ldap_errno = 0;
 532         ldap_instance  *inst = instance;
 533         int             search_retry = 0;
 534
 535         *result = NULL;
 536
 537         if (!conn){
 538                 radlog(L_ERR, "rlm_ldap: NULL connection handle passed");
 539                 return RLM_MODULE_FAIL;
 540         }
 541         if (conn->failed_conns > MAX_FAILED_CONNS_START){
 542                 conn->failed_conns++;
 543                 if (conn->failed_conns >= MAX_FAILED_CONNS_END){
 544                         conn->failed_conns = MAX_FAILED_CONNS_RESTART;
 545                         conn->bound = 0;
 546                 }
 547         }
 548 retry:
 549         if (!conn->bound || conn->ld == NULL) {
 550                 DEBUG2("rlm_ldap: attempting LDAP reconnection");
 551                 if (conn->ld){
 552                         DEBUG2("rlm_ldap: closing existing LDAP connection");
 553                         if (inst->cache_timeout >0)
 554                                 ldap_destroy_cache(conn->ld);
 555                         ldap_unbind_s(conn->ld);
 556                 }
 557                 if ((conn->ld = ldap_connect(instance, inst->login, inst->password, 0, &res)) == NULL) {
 558                         radlog(L_ERR, "rlm_ldap: (re)connection attempt failed");
 559                         if (search_retry == 0)
 560                                 conn->failed_conns++;
 561                         return (RLM_MODULE_FAIL);
 562                 }
 563                 conn->bound = 1;
 564                 conn->failed_conns = 0;
 565         }
 566         DEBUG2("rlm_ldap: performing search in %s, with filter %s", search_basedn ? search_basedn : "(null)" , filter);
 567         switch (ldap_search_st(conn->ld, search_basedn, scope, filter, attrs, 0, &(inst->timeout), result)) {
 568         case LDAP_SUCCESS:
 569         case LDAP_NO_SUCH_OBJECT:
 570                 break;
 571         case LDAP_SERVER_DOWN:
 572                 radlog(L_ERR, "rlm_ldap: ldap_search() failed: LDAP connection lost.");
 573                 conn->failed_conns++;
 574                 if (search_retry == 0){
 575                         if (conn->failed_conns <= MAX_FAILED_CONNS_START){
 576                                 radlog(L_INFO, "rlm_ldap: Attempting reconnect");
 577                                 search_retry = 1;
 578                                 conn->bound = 0;
 579                                 ldap_msgfree(*result);
 580                                 goto retry;
 581                         }
 582                 }
 583                 ldap_msgfree(*result);
 584                 return RLM_MODULE_FAIL;
 585         case LDAP_INSUFFICIENT_ACCESS:
 586                 radlog(L_ERR, "rlm_ldap: ldap_search() failed: Insufficient access. Check the identity and password configuration directives.");
 587                 ldap_msgfree(*result);
 588                 return RLM_MODULE_FAIL;
 589         case LDAP_TIMEOUT:
 590                 radlog(L_ERR, "rlm_ldap: ldap_search() failed: Timed out while waiting for server to respond. Please increase the timeout.");
 591                 ldap_msgfree(*result);
 592                 return RLM_MODULE_FAIL;
 593         case LDAP_TIMELIMIT_EXCEEDED:
 594         case LDAP_BUSY:
 595         case LDAP_UNAVAILABLE:
 596                 /* We don't need to reconnect in these cases so we don't set conn->bound */
 597                 ldap_get_option(conn->ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
 598                 radlog(L_ERR, "rlm_ldap: ldap_search() failed: %s", ldap_err2string(ldap_errno));
 599                 ldap_msgfree(*result);
 600                 return (RLM_MODULE_FAIL);
 601         default:
 602                 ldap_get_option(conn->ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
 603                 radlog(L_ERR, "rlm_ldap: ldap_search() failed: %s", ldap_err2string(ldap_errno));
 604                 conn->bound = 0;
 605                 ldap_msgfree(*result);
 606                 return (RLM_MODULE_FAIL);
 607         }
 608
 609         if ((ldap_count_entries(conn->ld, *result)) != 1) {
 610                 DEBUG("rlm_ldap: object not found or got ambiguous search result");
 611                 res = RLM_MODULE_NOTFOUND;
 612                 ldap_msgfree(*result);
 613         }
 614         return res;
 615 }
 616
 617
 618 /*
 619  * ldap_groupcmp(). Implement the Ldap-Group == "group" filter
 620  */
 621
 622 static int ldap_groupcmp(void *instance, REQUEST *req, VALUE_PAIR *request, VALUE_PAIR *check,
 623                 VALUE_PAIR *check_pairs, VALUE_PAIR **reply_pairs)
 624 {
 625         char            filter[MAX_GROUP_STR_LEN];
 626         char            gr_filter[MAX_AUTH_QUERY_LEN];
 627         int             res;
 628         LDAPMessage     *result = NULL;
 629         LDAPMessage     *msg = NULL;
 630         char            basedn[1024];
 631         char            *attrs[] = {"dn",NULL};
 632         ldap_instance   *inst = instance;
 633         LDAP_CONN       *conn;
 634         int             conn_id = -1;
 635
 636         check_pairs = check_pairs;
 637         reply_pairs = reply_pairs;
 638
 639         DEBUG("rlm_ldap: Entering ldap_groupcmp()");
 640
 641         if (check->strvalue == NULL || check->length == 0){
 642                 DEBUG("rlm_ldap::ldap_groupcmp: Illegal group name");
 643                 return 1;
 644         }
 645
 646         if (req == NULL){
 647                 DEBUG("rlm_ldap::ldap_groupcmp: NULL request");
 648                 return 1;
 649         }
 650
 651         if (!radius_xlat(basedn, sizeof(basedn), inst->basedn, req, NULL)) {
 652                 DEBUG("rlm_ldap::ldap_groupcmp: unable to create basedn.");
 653                 return 1;
 654         }
 655
 656         if ((pairfind(req->packet->vps, PW_LDAP_USERDN)) == NULL){
 657                 char            *user_dn = NULL;
 658
 659                 if (!radius_xlat(filter, MAX_AUTH_QUERY_LEN, inst->filter, req, NULL)) {
 660                         DEBUG("rlm_ldap::ldap_groupcmp: unable to create filter");
 661                         return 1;
 662                 }
 663                 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
 664                         radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
 665                         return 1;
 666                 }
 667                 if ((res = perform_search(inst, conn, basedn, LDAP_SCOPE_SUBTREE, filter, attrs, &result)) != RLM_MODULE_OK) {
 668                         DEBUG("rlm_ldap::ldap_groupcmp: search failed");
 669                         ldap_release_conn(conn_id,inst->conns);
 670                         return 1;
 671                 }
 672                 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
 673                         DEBUG("rlm_ldap::ldap_groupcmp: ldap_first_entry() failed");
 674                         ldap_release_conn(conn_id,inst->conns);
 675                         ldap_msgfree(result);
 676                         return 1;
 677                 }
 678                 if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
 679                         DEBUG("rlm_ldap:ldap_groupcmp:: ldap_get_dn() failed");
 680                         ldap_release_conn(conn_id,inst->conns);
 681                         ldap_msgfree(result);
 682                         return 1;
 683                 }
 684                 ldap_release_conn(conn_id,inst->conns);
 685                 /*
 686                 * Adding new attribute containing DN for LDAP object associated with
 687                 * given username
 688                 */
 689                 pairadd(&req->packet->vps, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
 690                 ldap_memfree(user_dn);
 691                 ldap_msgfree(result);
 692         }
 693
 694         if(!radius_xlat(gr_filter, MAX_GROUP_STR_LEN, inst->groupmemb_filt, req, NULL)){
 695                 DEBUG("rlm_ldap::ldap_groupcmp: unable to create filter.");
 696                 return 1;
 697         }
 698
 699         snprintf(filter,MAX_GROUP_STR_LEN - 1, "(&(%s=%s)%s)",inst->groupname_attr,(char *)check->strvalue,gr_filter);
 700
 701         if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
 702                 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
 703                 return 1;
 704         }
 705
 706         if ((res = perform_search(inst, conn, basedn, LDAP_SCOPE_SUBTREE, filter, attrs, &result)) != RLM_MODULE_OK){
 707                 if (res != RLM_MODULE_NOTFOUND){
 708                         DEBUG("rlm_ldap::ldap_groupcmp: Search returned error");
 709                         ldap_release_conn(conn_id,inst->conns);
 710                         return 1;
 711                 }
 712         }
 713         if (res != RLM_MODULE_NOTFOUND)
 714                 ldap_msgfree(result);
 715         ldap_release_conn(conn_id,inst->conns);
 716
 717         if (res == RLM_MODULE_NOTFOUND){
 718                 if (inst->groupmemb_attr == NULL){
 719                         DEBUG("rlm_ldap::ldap_groupcmp: Group %s not found or user is not a member.",(char *)check->strvalue);
 720                         return 1;
 721                 }
 722                 else{
 723                         VALUE_PAIR *user_dn;
 724                         char *group_attrs[] = {inst->groupmemb_attr,NULL};
 725
 726                         user_dn = pairfind(req->packet->vps, PW_LDAP_USERDN);
 727                         if (user_dn != NULL){
 728                                 char **vals;
 729
 730                                 snprintf(filter,MAX_GROUP_STR_LEN - 1, "(objectclass=*)");
 731                                 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
 732                                         radlog(L_ERR, "rlm_ldap: Add ldap connections are in use");
 733                                         return 1;
 734                                 }
 735                                 if ((res = perform_search(inst, conn, user_dn->strvalue, LDAP_SCOPE_BASE, filter, group_attrs, &result)) != RLM_MODULE_OK){
 736                                         DEBUG("rlm_ldap::ldap_groupcmp: Search returned error");
 737                                         ldap_release_conn(conn_id, inst->conns);
 738                                         return 1;
 739                                 }
 740
 741                                 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
 742                                         DEBUG("rlm_ldap::ldap_groupcmp: ldap_first_entry() failed");
 743                                         ldap_release_conn(conn_id,inst->conns);
 744                                         ldap_msgfree(result);
 745                                         return 1;
 746                                 }
 747                                 if ((vals = ldap_get_values(conn->ld, msg, inst->groupmemb_attr)) != NULL) {
 748                                         unsigned int i = 0;
 749                                         char found = 0;
 750
 751                                         for (;i < ldap_count_values(vals);i++){
 752                                                 if (strchr(vals[i],',') != NULL){ /* This looks like a DN */
 753                                                         LDAPMessage *gr_result = NULL;
 754
 755                                                         snprintf(filter,MAX_GROUP_STR_LEN - 1, "(%s=%s)",inst->groupname_attr,(char *)check->strvalue);
 756                                                         if ((res = perform_search(inst, conn, vals[i], LDAP_SCOPE_BASE, filter, attrs, &gr_result)) != RLM_MODULE_OK){
 757                                                                 if (res != RLM_MODULE_NOTFOUND){
 758                                                                         DEBUG("rlm_ldap::ldap_groupcmp: Search returned error");
 759                                                                         ldap_msgfree(result);
 760                                                                         ldap_value_free(vals);
 761                                                                         ldap_release_conn(conn_id, inst->conns);
 762                                                                         return 1;
 763                                                                 }
 764                                                         }
 765                                                         else{
 766                                                                 ldap_msgfree(gr_result);
 767                                                                 found = 1;
 768                                                                 break;
 769                                                         }
 770                                                 }
 771                                                 else{
 772                                                         if (strcmp(vals[i],(char *)check->strvalue) == 0){
 773                                                                 found = 1;
 774                                                                 break;
 775                                                         }
 776                                                 }
 777                                         }
 778                                         ldap_value_free(vals);
 779                                         ldap_msgfree(result);
 780                                         if (found == 0){
 781                                                 DEBUG("rlm_ldap::groupcmp: Group %s not found or user not a member",
 782                                                         (char *)check->strvalue);
 783                                                 ldap_release_conn(conn_id,inst->conns);
 784                                                 return 1;
 785                                         }
 786                                 }
 787                                 else{
 788                                         DEBUG("rlm_ldap::ldap_groupcmp: ldap_get_values() failed");
 789                                         ldap_release_conn(conn_id,inst->conns);
 790                                         ldap_msgfree(result);
 791                                         return 1;
 792                                 }
 793                         }
 794                 }
 795         }
 796
 797
 798         DEBUG("rlm_ldap::ldap_groupcmp: User found in group %s",(char *)check->strvalue);
 799         ldap_release_conn(conn_id,inst->conns);
 800
 801         return 0;
 802 }
 803
 804 /*
 805  * ldap_xlat()
 806  * Do an xlat on an LDAP URL
 807  */
 808
 809 static int ldap_xlat(void *instance, REQUEST *request, char *fmt, char *out, int freespace,
 810                                 RADIUS_ESCAPE_STRING func)
 811 {
 812         char url[MAX_STRING_LEN];
 813         int res;
 814         int ret = 0;
 815         ldap_instance *inst = instance;
 816         LDAPURLDesc *ldap_url;
 817         LDAPMessage *result = NULL;
 818         LDAPMessage *msg = NULL;
 819         char **vals;
 820         int conn_id = -1;
 821         LDAP_CONN *conn;
 822
 823         DEBUG("rlm_ldap: - ldap_xlat");
 824         if (!radius_xlat(url, sizeof(url), fmt, request, func)) {
 825                 radlog (L_ERR, "rlm_ldap: Unable to create LDAP URL.\n");
 826                 return 0;
 827         }
 828         if (!ldap_is_ldap_url(url)){
 829                 radlog (L_ERR, "rlm_ldap: String passed does not look like an LDAP URL.\n");
 830                 return 0;
 831         }
 832         if (ldap_url_parse(url,&ldap_url)){
 833                 radlog (L_ERR, "rlm_ldap: LDAP URL parse failed.\n");
 834                 return 0;
 835         }
 836         if (ldap_url->lud_attrs == NULL || ldap_url->lud_attrs[0] == NULL || \
 837                 ( ldap_url->lud_attrs[1] != NULL || ( ! strlen(ldap_url->lud_attrs[0]) || \
 838                 ! strcmp(ldap_url->lud_attrs[0],"*") ) ) ){
 839                 radlog (L_ERR, "rlm_ldap: Invalid Attribute(s) request.\n");
 840                 ldap_free_urldesc(ldap_url);
 841                 return 0;
 842         }
 843         if (ldap_url->lud_host){
 844                 if (strncmp(inst->server,ldap_url->lud_host,strlen(inst->server)) != 0 || \
 845                                 ldap_url->lud_port != inst->port){
 846                         DEBUG("rlm_ldap: Requested server/port is not known to this module instance.");
 847                         ldap_free_urldesc(ldap_url);
 848                         return 0;
 849                 }
 850         }
 851         if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
 852                 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
 853                 ldap_free_urldesc(ldap_url);
 854                 return 0;
 855         }
 856         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){
 857                 if (res == RLM_MODULE_NOTFOUND){
 858                         DEBUG("rlm_ldap: Search returned not found");
 859                         ldap_free_urldesc(ldap_url);
 860                         ldap_release_conn(conn_id,inst->conns);
 861                         return 0;
 862                 }
 863                 DEBUG("rlm_ldap: Search returned error");
 864                 ldap_free_urldesc(ldap_url);
 865                 ldap_release_conn(conn_id,inst->conns);
 866                 return 0;
 867         }
 868         if ((msg = ldap_first_entry(conn->ld, result)) == NULL){
 869                 DEBUG("rlm_ldap: ldap_first_entry() failed");
 870                 ldap_msgfree(result);
 871                 ldap_free_urldesc(ldap_url);
 872                 ldap_release_conn(conn_id,inst->conns);
 873                 return 0;
 874         }
 875         if ((vals = ldap_get_values(conn->ld, msg, ldap_url->lud_attrs[0])) != NULL) {
 876                 ret = strlen(vals[0]);
 877                 if (ret > freespace){
 878                         DEBUG("rlm_ldap: Insufficient string space");
 879                         ldap_free_urldesc(ldap_url);
 880                         ldap_value_free(vals);
 881                         ldap_msgfree(result);
 882                         ldap_release_conn(conn_id,inst->conns);
 883                         return 0;
 884                 }
 885                 DEBUG("rlm_ldap: Adding attribute %s, value: %s",ldap_url->lud_attrs[0],vals[0]);
 886                 strncpy(out,vals[0],ret);
 887                 ldap_value_free(vals);
 888         }
 889         else
 890                 ret = 0;
 891
 892         ldap_msgfree(result);
 893         ldap_free_urldesc(ldap_url);
 894         ldap_release_conn(conn_id,inst->conns);
 895
 896         DEBUG("rlm_ldap: - ldap_xlat end");
 897
 898         return ret;
 899 }
 900
 901
 902 /******************************************************************************
 903  *
 904  *      Function: rlm_ldap_authorize
 905  *
 906  *      Purpose: Check if user is authorized for remote access
 907  *
 908  ******************************************************************************/
 909 static int
 910 ldap_authorize(void *instance, REQUEST * request)
 911 {
 912         LDAPMessage     *result = NULL;
 913         LDAPMessage     *msg = NULL;
 914         LDAPMessage     *def_msg = NULL;
 915         LDAPMessage     *def_attr_msg = NULL;
 916         LDAPMessage     *def_result = NULL;
 917         LDAPMessage     *def_attr_result = NULL;
 918         ldap_instance   *inst = instance;
 919         char            *user_dn = NULL;
 920         char            filter[MAX_AUTH_QUERY_LEN];
 921         char            basedn[1024];
 922         VALUE_PAIR      *check_tmp;
 923         VALUE_PAIR      *reply_tmp;
 924         int             res;
 925         VALUE_PAIR      **check_pairs, **reply_pairs;
 926         char            **vals;
 927         VALUE_PAIR      *module_fmsg_vp;
 928         VALUE_PAIR      *user_profile;
 929         char            module_fmsg[MAX_STRING_LEN];
 930         LDAP_CONN       *conn;
 931         int             conn_id = -1;
 932
 933         DEBUG("rlm_ldap: - authorize");
 934
 935         if (!request->username){
 936                 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Name\" is required for authentication.\n");
 937                 return RLM_MODULE_INVALID;
 938         }
 939
 940         check_pairs = &request->config_items;
 941         reply_pairs = &request->reply->vps;
 942
 943         /*
 944          * Check for valid input, zero length names not permitted
 945          */
 946         if (request->username->strvalue == 0) {
 947                 radlog(L_ERR, "rlm_ldap: zero length username not permitted\n");
 948                 return RLM_MODULE_INVALID;
 949         }
 950         DEBUG("rlm_ldap: performing user authorization for %s",
 951                request->username->strvalue);
 952
 953         if (!radius_xlat(filter, sizeof(filter), inst->filter,
 954                          request, NULL)) {
 955                 radlog (L_ERR, "rlm_ldap: unable to create filter.\n");
 956                 return RLM_MODULE_INVALID;
 957         }
 958
 959         if (!radius_xlat(basedn, sizeof(basedn), inst->basedn,
 960                          request, NULL)) {
 961                 radlog (L_ERR, "rlm_ldap: unable to create basedn.\n");
 962                 return RLM_MODULE_INVALID;
 963         }
 964
 965         if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
 966                 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
 967                 return RLM_MODULE_FAIL;
 968         }
 969         if ((res = perform_search(instance, conn, basedn, LDAP_SCOPE_SUBTREE, filter, inst->atts, &result)) != RLM_MODULE_OK) {
 970                 DEBUG("rlm_ldap: search failed");
 971                 if (res == RLM_MODULE_NOTFOUND){
 972                         snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: User not found");
 973                         module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
 974                         pairadd(&request->packet->vps, module_fmsg_vp);
 975                 }
 976                 ldap_release_conn(conn_id,inst->conns);
 977                 return (res);
 978         }
 979         if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
 980                 DEBUG("rlm_ldap: ldap_first_entry() failed");
 981                 ldap_msgfree(result);
 982                 ldap_release_conn(conn_id,inst->conns);
 983                 return RLM_MODULE_FAIL;
 984         }
 985         if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
 986                 DEBUG("rlm_ldap: ldap_get_dn() failed");
 987                 ldap_msgfree(result);
 988                 ldap_release_conn(conn_id,inst->conns);
 989                 return RLM_MODULE_FAIL;
 990         }
 991         /*
 992          * Adding new attribute containing DN for LDAP object associated with
 993          * given username
 994          */
 995         pairadd(&request->packet->vps, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
 996         ldap_memfree(user_dn);
 997
 998
 999         /* Remote access is controled by attribute of the user object */
1000         if (inst->access_attr) {
1001                 if ((vals = ldap_get_values(conn->ld, msg, inst->access_attr)) != NULL) {
1002                         if (inst->default_allow){
1003                                 DEBUG("rlm_ldap: checking if remote access for %s is allowed by %s", request->username->strvalue, inst->access_attr);
1004                                 if (!strncmp(vals[0], "FALSE", 5)) {
1005                                         DEBUG("rlm_ldap: dialup access disabled");
1006                                         snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
1007                                         module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1008                                         pairadd(&request->packet->vps, module_fmsg_vp);
1009                                         ldap_msgfree(result);
1010                                         ldap_value_free(vals);
1011                                         ldap_release_conn(conn_id,inst->conns);
1012                                         return RLM_MODULE_USERLOCK;
1013                                 }
1014                                 ldap_value_free(vals);
1015                         }
1016                         else{
1017                                 DEBUG("rlm_ldap: %s attribute exists - access denied by default", inst->access_attr);
1018                                 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
1019                                 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1020                                 pairadd(&request->packet->vps, module_fmsg_vp);
1021                                 ldap_msgfree(result);
1022                                 ldap_value_free(vals);
1023                                 ldap_release_conn(conn_id,inst->conns);
1024                                 return RLM_MODULE_USERLOCK;
1025                         }
1026                 } else {
1027                         if (inst->default_allow){
1028                                 DEBUG("rlm_ldap: no %s attribute - access denied by default", inst->access_attr);
1029                                 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
1030                                 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1031                                 pairadd(&request->packet->vps, module_fmsg_vp);
1032                                 ldap_msgfree(result);
1033                                 ldap_release_conn(conn_id,inst->conns);
1034                                 return RLM_MODULE_USERLOCK;
1035                         }
1036                 }
1037         }
1038         if (inst->cache_timeout >0)
1039                 ldap_enable_cache(conn->ld, inst->cache_timeout, inst->cache_size);
1040
1041         /*
1042          * Check for the default profile entry. If it exists then add the
1043          * attributes it contains in the check and reply pairs
1044          */
1045
1046         user_profile = pairfind(request->config_items, PW_USER_PROFILE);
1047         if (inst->default_profile || user_profile){
1048                 char *profile = inst->default_profile;
1049
1050                 strncpy(filter,"(objectclass=radiusprofile)",MAX_AUTH_QUERY_LEN);
1051                 if (user_profile)
1052                         profile = user_profile->strvalue;
1053                 if (profile && strlen(profile)){
1054                         if ((res = perform_search(instance, conn,
1055                                 profile, LDAP_SCOPE_BASE,
1056                                 filter, inst->atts, &def_result)) == RLM_MODULE_OK){
1057                                 if ((def_msg = ldap_first_entry(conn->ld,def_result))){
1058                                         if ((check_tmp = ldap_pairget(conn->ld,def_msg,inst->check_item_map,check_pairs)))
1059                                                 pairadd(check_pairs,check_tmp);
1060                                         if ((reply_tmp = ldap_pairget(conn->ld,def_msg,inst->reply_item_map,reply_pairs)))
1061                                                 pairadd(reply_pairs,reply_tmp);
1062                                 }
1063                                 ldap_msgfree(def_result);
1064                         } else
1065                                 DEBUG("rlm_ldap: default_profile/user-profile search failed");
1066                 }
1067         }
1068
1069         /*
1070          * Check for the profile attribute. If it exists, we assume that it
1071          * contains the DN of an entry containg a profile for the user. That
1072          * way we can have different general profiles for various user groups
1073          * (students,faculty,staff etc)
1074          */
1075
1076         if (inst->profile_attr){
1077                 if ((vals = ldap_get_values(conn->ld, msg, inst->profile_attr)) != NULL && strlen(vals[0])) {
1078                         strncpy(filter,"(objectclass=radiusprofile)",MAX_AUTH_QUERY_LEN);
1079                         if (inst->cache_timeout >0)
1080                                 ldap_enable_cache(conn->ld, inst->cache_timeout, inst->cache_size);
1081                         if ((res = perform_search(instance, conn,
1082                                 vals[0], LDAP_SCOPE_BASE,
1083                                 filter, inst->atts, &def_attr_result)) == RLM_MODULE_OK){
1084                                 if ((def_attr_msg = ldap_first_entry(conn->ld,def_attr_result))){
1085                                         if ((check_tmp = ldap_pairget(conn->ld,def_attr_msg,inst->check_item_map,check_pairs)))
1086                                                 pairadd(check_pairs,check_tmp);
1087                                         if ((reply_tmp = ldap_pairget(conn->ld,def_attr_msg,inst->reply_item_map,reply_pairs)))
1088                                                 pairadd(reply_pairs,reply_tmp);
1089                                 }
1090                                 ldap_msgfree(def_attr_result);
1091                         } else
1092                                 DEBUG("rlm_ldap: profile_attribute search failed");
1093                         ldap_value_free(vals);
1094                 }
1095         }
1096         if (inst->cache_timeout >0)
1097                 ldap_disable_cache(conn->ld);
1098         if (inst->passwd_attr && strlen(inst->passwd_attr)){
1099                 VALUE_PAIR *passwd_item;
1100
1101                 if ((passwd_item = pairfind(request->config_items, PW_PASSWORD)) == NULL){
1102                         char **passwd_vals;
1103                         char *passwd_val = NULL;
1104                         int passwd_len;
1105
1106                         if ((passwd_vals = ldap_get_values(conn->ld,msg,inst->passwd_attr)) != NULL){
1107                                 unsigned int i=0;
1108                                 while(passwd_vals[i] != NULL){
1109                                         if (strlen(passwd_vals[i])){
1110                                                 passwd_val = passwd_vals[i];
1111
1112                                                 if (inst->passwd_hdr && strlen(inst->passwd_hdr)){
1113                                                         passwd_val = strstr(passwd_val,inst->passwd_hdr);
1114                                                         if (passwd_val != NULL)
1115                                                                 passwd_val += strlen(inst->passwd_hdr);
1116                                                         else
1117                                                                 DEBUG("rlm_ldap: Password header not found in password %s for user %s", passwd_vals[0],request->username->strvalue);
1118                                                 }
1119                                                 if (passwd_val){
1120                                                         if ((passwd_item = paircreate(PW_PASSWORD,PW_TYPE_STRING)) == NULL){
1121                                                                 radlog(L_ERR|L_CONS, "no memory");
1122                                                                 ldap_value_free(passwd_vals);
1123                                                                 ldap_msgfree(result);
1124                                                                 ldap_release_conn(conn_id,inst->conns);
1125                                                                 return RLM_MODULE_FAIL;
1126                                                         }
1127                                                         passwd_len = strlen(passwd_val);
1128                                                         strncpy(passwd_item->strvalue,passwd_val,MAX_STRING_LEN - 1);
1129                                                         passwd_item->length = (passwd_len > (MAX_STRING_LEN - 1)) ? (MAX_STRING_LEN - 1) : passwd_len;
1130                                                         pairadd(&request->config_items,passwd_item);
1131                                                         DEBUG("rlm_ldap: Added password %s in check items",passwd_item->strvalue);
1132                                                 }
1133                                         }
1134                                         i++;
1135                                 }
1136                                 ldap_value_free(passwd_vals);
1137                         }
1138                 }
1139         }
1140
1141
1142
1143         DEBUG("rlm_ldap: looking for check items in directory...");
1144
1145         if ((check_tmp = ldap_pairget(conn->ld, msg, inst->check_item_map,check_pairs)) != NULL)
1146                 pairadd(check_pairs, check_tmp);
1147
1148
1149         DEBUG("rlm_ldap: looking for reply items in directory...");
1150
1151
1152         if ((reply_tmp = ldap_pairget(conn->ld, msg, inst->reply_item_map,reply_pairs)) != NULL)
1153                 pairadd(reply_pairs, reply_tmp);
1154
1155        if (inst->do_comp && paircmp(request,request->packet->vps,*check_pairs,reply_pairs) != 0){
1156                 DEBUG("rlm_ldap: Pairs do not match. Rejecting user.");
1157                 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Pairs do not match");
1158                 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1159                 pairadd(&request->packet->vps, module_fmsg_vp);
1160                 ldap_msgfree(result);
1161                 ldap_release_conn(conn_id,inst->conns);
1162
1163                 return RLM_MODULE_REJECT;
1164         }
1165
1166         /*
1167          * Module should default to LDAP authentication if no Auth-Type
1168          * specified
1169          */
1170         if (pairfind(*check_pairs, PW_AUTHTYPE) == NULL)
1171                 pairadd(check_pairs, pairmake("Auth-Type", "LDAP", T_OP_EQ));
1172
1173
1174         DEBUG("rlm_ldap: user %s authorized to use remote access",
1175               request->username->strvalue);
1176         ldap_msgfree(result);
1177         ldap_release_conn(conn_id,inst->conns);
1178
1179         return RLM_MODULE_OK;
1180 }
1181
1182 /*****************************************************************************
1183  *
1184  *      Function: rlm_ldap_authenticate
1185  *
1186  *      Purpose: Check the user's password against ldap database
1187  *
1188  *****************************************************************************/
1189 static int
1190 ldap_authenticate(void *instance, REQUEST * request)
1191 {
1192         LDAP           *ld_user;
1193         LDAPMessage    *result, *msg;
1194         ldap_instance  *inst = instance;
1195         char           *user_dn, *attrs[] = {"uid", NULL};
1196         char            filter[MAX_AUTH_QUERY_LEN];
1197         char            basedn[1024];
1198         int             res;
1199         VALUE_PAIR     *vp_user_dn;
1200         VALUE_PAIR      *module_fmsg_vp;
1201         char            module_fmsg[MAX_STRING_LEN];
1202         LDAP_CONN       *conn;
1203         int             conn_id = -1;
1204
1205         DEBUG("rlm_ldap: - authenticate");
1206         /*
1207          * Ensure that we're being passed a plain-text password, and not
1208          * anything else.
1209          */
1210
1211         if (!request->username) {
1212                 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Name\" is required for authentication.\n");
1213                 return RLM_MODULE_INVALID;
1214         }
1215
1216         if (!request->password){
1217                 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Password\" is required for authentication.");
1218                 return RLM_MODULE_INVALID;
1219         }
1220
1221         if(request->password->attribute != PW_PASSWORD) {
1222                 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Password\" is required for authentication. Cannot use \"%s\".", request->password->name);
1223                 return RLM_MODULE_INVALID;
1224         }
1225
1226         if (request->password->length == 0) {
1227                 radlog(L_ERR, "rlm_ldap: empty password supplied");
1228                 return RLM_MODULE_INVALID;
1229         }
1230
1231         DEBUG("rlm_ldap: login attempt by \"%s\" with password \"%s\"",
1232                request->username->strvalue, request->password->strvalue);
1233
1234         while((vp_user_dn = pairfind(request->packet->vps, PW_LDAP_USERDN)) == NULL) {
1235                 if (!radius_xlat(filter, sizeof(filter), inst->filter,
1236                                 request, NULL)) {
1237                         radlog (L_ERR, "rlm_ldap: unable to create filter.\n");
1238                         return RLM_MODULE_INVALID;
1239                 }
1240
1241                 if (!radius_xlat(basedn, sizeof(basedn), inst->basedn,
1242                                 request, NULL)) {
1243                         radlog (L_ERR, "rlm_ldap: unable to create basedn.\n");
1244                         return RLM_MODULE_INVALID;
1245                 }
1246
1247                 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
1248                         radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
1249                         return RLM_MODULE_FAIL;
1250                 }
1251                 if ((res = perform_search(instance, conn, basedn, LDAP_SCOPE_SUBTREE, filter, attrs, &result)) != RLM_MODULE_OK) {
1252                         if (res == RLM_MODULE_NOTFOUND){
1253                                 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: User not found");
1254                                 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1255                                 pairadd(&request->packet->vps, module_fmsg_vp);
1256                         }
1257                         ldap_release_conn(conn_id,inst->conns);
1258                         return (res);
1259                 }
1260                 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
1261                         ldap_msgfree(result);
1262                         ldap_release_conn(conn_id,inst->conns);
1263                         return RLM_MODULE_FAIL;
1264                 }
1265                 if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
1266                         DEBUG("rlm_ldap: ldap_get_dn() failed");
1267                         ldap_msgfree(result);
1268                         ldap_release_conn(conn_id,inst->conns);
1269                         return RLM_MODULE_FAIL;
1270                 }
1271                 ldap_release_conn(conn_id,inst->conns);
1272                 pairadd(&request->packet->vps, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
1273                 ldap_memfree(user_dn);
1274                 ldap_msgfree(result);
1275         }
1276
1277         user_dn = vp_user_dn->strvalue;
1278
1279         DEBUG("rlm_ldap: user DN: %s", user_dn);
1280
1281         ld_user = ldap_connect(instance, user_dn, request->password->strvalue,
1282                                1, &res);
1283         if (ld_user == NULL){
1284                 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Bind as user failed");
1285                 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1286                 pairadd(&request->packet->vps, module_fmsg_vp);
1287                 return (res);
1288         }
1289
1290         DEBUG("rlm_ldap: user %s authenticated succesfully",
1291               request->username->strvalue);
1292         ldap_unbind_s(ld_user);
1293
1294         return RLM_MODULE_OK;
1295 }
1296
1297 static LDAP    *
1298 ldap_connect(void *instance, const char *dn, const char *password, int auth, int *result)
1299 {
1300         ldap_instance  *inst = instance;
1301         LDAP           *ld;
1302         int             msgid, rc, ldap_version;
1303         int             ldap_errno = 0;
1304         LDAPMessage    *res;
1305
1306         DEBUG("rlm_ldap: (re)connect to %s:%d, authentication %d", inst->server, inst->port, auth);
1307         if ((ld = ldap_init(inst->server, inst->port)) == NULL) {
1308                 radlog(L_ERR, "rlm_ldap: ldap_init() failed");
1309                 *result = RLM_MODULE_FAIL;
1310                 return (NULL);
1311         }
1312         if (ldap_set_option(ld, LDAP_OPT_NETWORK_TIMEOUT, (void *) &(inst->net_timeout)) != LDAP_OPT_SUCCESS) {
1313                 radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_NETWORK_TIMEOUT %ld.%ld", inst->net_timeout.tv_sec, inst->net_timeout.tv_usec);
1314         }
1315         if (ldap_set_option(ld, LDAP_OPT_TIMELIMIT, (void *) &(inst->timelimit)) != LDAP_OPT_SUCCESS) {
1316                 radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_TIMELIMIT %d", inst->timelimit);
1317         }
1318         if (inst->ldap_debug && ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, &(inst->ldap_debug)) != LDAP_OPT_SUCCESS) {
1319                 radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_DEBUG_LEVEL %d", inst->ldap_debug);
1320         }
1321 #ifdef HAVE_LDAP_START_TLS
1322         if(inst->tls_mode) {
1323                 DEBUG("rlm_ldap: setting TLS mode to %d", inst->tls_mode);
1324                 if(ldap_set_option(ld, LDAP_OPT_X_TLS,
1325                            (void *) &(inst->tls_mode)) != LDAP_OPT_SUCCESS) {
1326                         ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
1327                         radlog(L_ERR, "rlm_ldap: could not set LDAP_OPT_X_TLS option %s", ldap_err2string(ldap_errno));
1328                 }
1329         }
1330
1331         if (inst->start_tls) {
1332                 DEBUG("rlm_ldap: starting TLS");
1333                 ldap_version = LDAP_VERSION3;
1334                 if (ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION, &ldap_version) == LDAP_SUCCESS) {
1335                         rc = ldap_start_tls_s(ld, NULL, NULL);
1336                         if (rc != LDAP_SUCCESS) {
1337                                 DEBUG("rlm_ldap: ldap_start_tls_s()");
1338                                 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
1339                                 radlog(L_ERR, "rlm_ldap: could not start TLS %s", ldap_err2string(ldap_errno));
1340                                 *result = RLM_MODULE_FAIL;
1341                                 ldap_unbind_s(ld);
1342                                 return (NULL);
1343                         }
1344                 }
1345         }
1346 #endif /* HAVE_LDAP_START_TLS */
1347
1348         DEBUG("rlm_ldap: bind as %s/%s to %s:%d", dn, password, inst->server, inst->port);
1349         msgid = ldap_bind(ld, dn, password,LDAP_AUTH_SIMPLE);
1350         if (msgid == -1) {
1351                 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
1352                 radlog(L_ERR, "rlm_ldap: %s bind to %s:%d failed: %s",
1353                          dn, inst->server, inst->port,
1354                          ldap_err2string(ldap_errno));
1355                 *result = RLM_MODULE_FAIL;
1356                 ldap_unbind_s(ld);
1357                 return (NULL);
1358         }
1359         DEBUG("rlm_ldap: waiting for bind result ...");
1360
1361         rc = ldap_result(ld, msgid, 1, &(inst->timeout), &res);
1362
1363         if(rc < 1) {
1364                 DEBUG("rlm_ldap: ldap_result()");
1365                 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
1366                 radlog(L_ERR, "rlm_ldap: %s bind to %s:%d failed: %s",
1367                         dn, inst->server, inst->port,
1368                         (rc == 0) ? "timeout" : ldap_err2string(ldap_errno));
1369                 *result = RLM_MODULE_FAIL;
1370                 ldap_unbind_s(ld);
1371                 return (NULL);
1372         }
1373         ldap_errno = ldap_result2error(ld, res, 1);
1374         switch (ldap_errno) {
1375         case LDAP_SUCCESS:
1376                 *result = RLM_MODULE_OK;
1377                 break;
1378
1379         case LDAP_INVALID_CREDENTIALS:
1380                 if (auth)
1381                         *result = RLM_MODULE_REJECT;
1382                 else {
1383                         radlog(L_ERR, "rlm_ldap: LDAP login failed: check login, password settings in ldap section of radiusd.conf");
1384                         *result = RLM_MODULE_FAIL;
1385                 }
1386                 break;
1387
1388         default:
1389                 radlog(L_ERR,"rlm_ldap: %s bind to %s:%d failed %s",
1390                         dn, inst->server, inst->port,
1391                         ldap_err2string(ldap_errno));
1392                 *result = RLM_MODULE_FAIL;
1393         }
1394
1395         if (*result != RLM_MODULE_OK) {
1396                 ldap_unbind_s(ld);
1397                 ld = NULL;
1398         }
1399         return ld;
1400 }
1401
1402 /*****************************************************************************
1403  *
1404  *      Detach from the LDAP server and cleanup internal state.
1405  *
1406  *****************************************************************************/
1407 static int
1408 ldap_detach(void *instance)
1409 {
1410         ldap_instance  *inst = instance;
1411         TLDAP_RADIUS *pair, *nextpair;
1412
1413         if (inst->server)
1414                 free((char *) inst->server);
1415         if (inst->login)
1416                 free((char *) inst->login);
1417         if (inst->password)
1418                 free((char *) inst->password);
1419         if (inst->basedn)
1420                 free((char *) inst->basedn);
1421         if (inst->dictionary_mapping)
1422                 free(inst->dictionary_mapping);
1423         if (inst->filter)
1424                 free((char *) inst->filter);
1425         if (inst->passwd_hdr)
1426                 free((char *) inst->passwd_hdr);
1427         if (inst->passwd_attr)
1428                 free((char *) inst->passwd_attr);
1429         if (inst->groupname_attr)
1430                 free((char *) inst->groupname_attr);
1431         if (inst->groupmemb_filt)
1432                 free((char *) inst->groupmemb_filt);
1433         if (inst->groupmemb_attr)
1434                 free((char *) inst->groupmemb_attr);
1435         if (inst->conns){
1436                 int i=0;
1437
1438                 for(;i<inst->num_conns;i++){
1439                         if (inst->conns[i].ld){
1440                                 if (inst->cache_timeout >0)
1441                                         ldap_destroy_cache(inst->conns[i].ld);
1442                                 ldap_unbind_s(inst->conns[i].ld);
1443                         }
1444                         pthread_mutex_destroy(&inst->conns[i].mutex);
1445                 }
1446                 free(inst->conns);
1447         }
1448
1449         pair = inst->check_item_map;
1450
1451         while (pair != NULL) {
1452                 nextpair = pair->next;
1453                 free(pair->attr);
1454                 free(pair->radius_attr);
1455                 free(pair);
1456                 pair = nextpair;
1457         }
1458
1459         pair = inst->reply_item_map;
1460
1461         while (pair != NULL) {
1462                 nextpair = pair->next;
1463                 free(pair->attr);
1464                 free(pair->radius_attr);
1465                 free(pair);
1466                 pair = nextpair;
1467         }
1468
1469         if (inst->atts){
1470                 int i = 0;
1471
1472                 while(inst->atts[i])
1473                         free(inst->atts[i++]);
1474                 free(inst->atts);
1475         }
1476
1477         paircompare_unregister(PW_LDAP_GROUP, ldap_groupcmp);
1478         xlat_unregister(inst->xlat_name,ldap_xlat);
1479         free(inst->xlat_name);
1480
1481         free(inst);
1482
1483         return 0;
1484 }
1485
1486 #ifdef FIELDCPY
1487 static void
1488 fieldcpy(char *string, char **uptr)
1489 {
1490         char           *ptr;
1491
1492         ptr = *uptr;
1493         while (*ptr == ' ' || *ptr == '\t') {
1494                 ptr++;
1495         }
1496         if (*ptr == '"') {
1497                 ptr++;
1498                 while (*ptr != '"' && *ptr != '\0' && *ptr != '\n') {
1499                         *string++ = *ptr++;
1500                 }
1501                 *string = '\0';
1502                 if (*ptr == '"') {
1503                         ptr++;
1504                 }
1505                 *uptr = ptr;
1506                 return;
1507         }
1508         while (*ptr != ' ' && *ptr != '\t' && *ptr != '\0' && *ptr != '\n' &&
1509                *ptr != '=' && *ptr != ',') {
1510                 *string++ = *ptr++;
1511         }
1512         *string = '\0';
1513         *uptr = ptr;
1514         return;
1515 }
1516 #endif
1517 /*****************************************************************************
1518  *      Get RADIUS attributes from LDAP object
1519  *      ( according to draft-adoba-radius-05.txt
1520  *        <http://www.ietf.org/internet-drafts/draft-adoba-radius-05.txt> )
1521  *
1522  *****************************************************************************/
1523
1524 static VALUE_PAIR *
1525 ldap_pairget(LDAP * ld, LDAPMessage * entry,
1526              TLDAP_RADIUS * item_map, VALUE_PAIR **pairs)
1527 {
1528         char          **vals;
1529         int             vals_count;
1530         int             vals_idx;
1531         char           *ptr;
1532         TLDAP_RADIUS   *element;
1533         LRAD_TOKEN      token;
1534         int             is_generic_attribute;
1535         char            value[256];
1536         VALUE_PAIR     *pairlist = NULL;
1537         VALUE_PAIR     *newpair = NULL;
1538
1539         /* check if there is a mapping from this LDAP attribute to a RADIUS attribute */
1540         for (element = item_map; element != NULL; element = element->next) {
1541         if ((vals = ldap_get_values(ld,entry,element->attr)) != NULL){
1542                         /* check whether this is a one-to-one-mapped ldap attribute or a generic
1543                            attribute and set flag accordingly */
1544
1545                         if (strcasecmp(element->radius_attr, GENERIC_ATTRIBUTE_ID)==0)
1546                                 is_generic_attribute = 1;
1547                         else
1548                                 is_generic_attribute = 0;
1549
1550                         /* find out how many values there are for the attribute and extract all of them */
1551
1552                         vals_count = ldap_count_values(vals);
1553
1554                         for (vals_idx = 0; vals_idx < vals_count; vals_idx++) {
1555                                 ptr = vals[vals_idx];
1556
1557                                 if (is_generic_attribute) {
1558                                         /* this is a generic attribute */
1559                                         LRAD_TOKEN dummy; /* makes pairread happy */
1560
1561                                         /* not sure if using pairread here is ok ... */
1562                                         if ( (newpair = pairread(&ptr, &dummy)) != NULL) {
1563                                                 DEBUG("rlm_ldap: extracted attribute %s from generic item %s",
1564                                                       newpair->name, vals[vals_idx]);
1565                                                 pairadd(&pairlist, newpair);
1566                                         } else {
1567                                                 radlog(L_ERR, "rlm_ldap: parsing %s failed: %s",
1568                                                        element->attr, vals[vals_idx]);
1569                                         }
1570                                 } else {
1571                                         /* this is a one-to-one-mapped attribute */
1572                                         token = gettoken(&ptr, value, sizeof(value) - 1);
1573                                         if (token < T_EQSTART || token > T_EQEND) {
1574                                                 token = T_OP_EQ;
1575                                         } else {
1576                                                 gettoken(&ptr, value, sizeof(value) - 1);
1577                                         }
1578                                         if (value[0] == 0) {
1579                                                 DEBUG("rlm_ldap: Attribute %s has no value", element->attr);
1580                                                 break;
1581                                         }
1582                                         DEBUG("rlm_ldap: Adding %s as %s, value %s & op=%d", element->attr, element->radius_attr, value, token);
1583                                                 if ((newpair = pairmake(element->radius_attr, value, token)) == NULL)
1584                                                 continue;
1585                                         if (! vals_idx){
1586                                                 pairdelete(pairs,newpair->attribute);
1587                                         }
1588                                         pairadd(&pairlist, newpair);
1589                                 }
1590                         }
1591                         ldap_value_free(vals);
1592                 }
1593         }
1594
1595         return (pairlist);
1596 }
1597
1598 /* globally exported name */
1599 module_t        rlm_ldap = {
1600         "LDAP",
1601         RLM_TYPE_THREAD_SAFE,   /* type: reserved        */
1602         NULL,                   /* initialization        */
1603         ldap_instantiate,       /* instantiation         */
1604         {
1605                 ldap_authenticate,      /* authentication        */
1606                 ldap_authorize,         /* authorization         */
1607                 NULL,                   /* preaccounting         */
1608                 NULL,                   /* accounting            */
1609                 NULL,                   /* checksimul            */
1610                 NULL,                   /* pre-proxy             */
1611                 NULL,                   /* post-proxy            */
1612                 NULL                    /* post-auth             */
1613         },
1614         ldap_detach,            /* detach                */
1615         NULL,                   /* destroy               */
1616 };