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