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  *        Bug report by Stefan Radovanovici <sra@rtsffm.com>
  96  */
  97 static const char rcsid[] = "$Id$";
  98
  99 #include "autoconf.h"
 100
 101 #include        <sys/types.h>
 102 #include        <sys/socket.h>
 103 #include        <sys/time.h>
 104 #include        <netinet/in.h>
 105
 106 #include        <stdio.h>
 107 #include        <stdlib.h>
 108 #include        <netdb.h>
 109 #include        <pwd.h>
 110 #include        <time.h>
 111 #include        <ctype.h>
 112 #include        <string.h>
 113
 114 #include        <lber.h>
 115 #include        <ldap.h>
 116
 117 #include        <errno.h>
 118 #include        <unistd.h>
 119 #include        <pthread.h>
 120
 121 #include        "libradius.h"
 122 #include        "radiusd.h"
 123 #include        "conffile.h"
 124 #include        "modules.h"
 125 #include        "rad_assert.h"
 126
 127
 128 #define MAX_AUTH_QUERY_LEN      256
 129 #define MAX_GROUP_STR_LEN       1024
 130 #define TIMELIMIT 5
 131
 132 /*
 133  * These are used in case ldap_search returns LDAP_SERVER_DOWN
 134  * In that case we do conn->failed_conns++ and then check it:
 135  * If conn->failed_conns <= MAX_FAILED_CONNS_START then we try
 136  * to reconnect
 137  * conn->failed_conns is also checked on entrance in perform_search:
 138  * If conn->failed_conns > MAX_FAILED_CONNS_START then we don't
 139  * try to do anything and we just do conn->failed_conns++ and
 140  * return RLM_MODULE_FAIL
 141  * if conn->failed_conns >= MAX_FAILED_CONNS_END then we give it
 142  * another chance and we set it to MAX_FAILED_CONNS_RESTART and
 143  * try to reconnect.
 144  *
 145  *
 146  * We are assuming that the majority of the LDAP_SERVER_DOWN cases
 147  * will either be an ldap connection timeout or a temporary ldap
 148  * server problem.
 149  * As a result we make a few attempts to reconnect hoping that the problem
 150  * will soon go away. If it does not go away then we just return
 151  * RLM_MODULE_FAIL on entrance in perform_search until conn->failed_conns
 152  * gets to MAX_FAILED_CONNS_END. After that we give it one more chance by
 153  * going back to MAX_FAILED_CONNS_RESTART
 154  *
 155  */
 156
 157 #define MAX_FAILED_CONNS_END            20
 158 #define MAX_FAILED_CONNS_RESTART        4
 159 #define MAX_FAILED_CONNS_START          5
 160
 161 /* linked list of mappings between RADIUS attributes and LDAP attributes */
 162 struct TLDAP_RADIUS {
 163         char*                 attr;
 164         char*                 radius_attr;
 165         struct TLDAP_RADIUS*  next;
 166 };
 167 typedef struct TLDAP_RADIUS TLDAP_RADIUS;
 168
 169 typedef struct ldap_conn {
 170         LDAP            *ld;
 171         char            bound;
 172         char            locked;
 173         int             failed_conns;
 174         pthread_mutex_t mutex;
 175 } LDAP_CONN;
 176
 177 #define MAX_SERVER_LINE 1024
 178
 179 typedef struct {
 180         char           *server;
 181         int             port;
 182         int             timelimit;
 183         struct timeval  net_timeout;
 184         struct timeval  timeout;
 185         int             debug;
 186         int             tls_mode;
 187         int             start_tls;
 188         int             num_conns;
 189         int             cache_timeout;
 190         int             cache_size;
 191         int             do_comp;
 192         int             default_allow;
 193         char           *login;
 194         char           *password;
 195         char           *filter;
 196         char           *basedn;
 197         char           *default_profile;
 198         char           *profile_attr;
 199         char           *access_attr;
 200         char           *passwd_hdr;
 201         char           *passwd_attr;
 202         char           *dictionary_mapping;
 203         char           *groupname_attr;
 204         char           *groupmemb_filt;
 205         char           *groupmemb_attr;
 206         char            **atts;
 207         TLDAP_RADIUS   *check_item_map;
 208         TLDAP_RADIUS   *reply_item_map;
 209         LDAP_CONN       *conns;
 210         int             ldap_debug; /* Debug flag for LDAP SDK */
 211         char            *xlat_name; /* name used to xlat */
 212 }               ldap_instance;
 213
 214 static CONF_PARSER module_config[] = {
 215         {"server", PW_TYPE_STRING_PTR, offsetof(ldap_instance,server), NULL, NULL},
 216         {"port", PW_TYPE_INTEGER, offsetof(ldap_instance,port), NULL, "389"},
 217         /* wait forever on network activity */
 218         {"net_timeout", PW_TYPE_INTEGER, offsetof(ldap_instance,net_timeout.tv_sec), NULL, "10"},
 219         /* wait forever for search results */
 220         {"timeout", PW_TYPE_INTEGER, offsetof(ldap_instance,timeout.tv_sec), NULL, "20"},
 221         /* allow server unlimited time for search (server-side limit) */
 222         {"timelimit", PW_TYPE_INTEGER, offsetof(ldap_instance,timelimit), NULL, "20"},
 223         {"ldap_cache_timeout", PW_TYPE_INTEGER, offsetof(ldap_instance,cache_timeout), NULL, "0"},
 224         {"ldap_cache_size", PW_TYPE_INTEGER, offsetof(ldap_instance,cache_size), NULL, "0"},
 225         {"identity", PW_TYPE_STRING_PTR, offsetof(ldap_instance,login), NULL, ""},
 226         {"start_tls", PW_TYPE_BOOLEAN, offsetof(ldap_instance,start_tls), NULL, "no"},
 227         {"password", PW_TYPE_STRING_PTR, offsetof(ldap_instance,password), NULL, ""},
 228         {"basedn", PW_TYPE_STRING_PTR, offsetof(ldap_instance,basedn), NULL, NULL},
 229         {"filter", PW_TYPE_STRING_PTR, offsetof(ldap_instance,filter), NULL, "(uid=%u)"},
 230         {"default_profile", PW_TYPE_STRING_PTR, offsetof(ldap_instance,default_profile), NULL, NULL},
 231         {"profile_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,profile_attr), NULL, NULL},
 232         {"password_header", PW_TYPE_STRING_PTR, offsetof(ldap_instance,passwd_hdr), NULL, NULL},
 233         {"password_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,passwd_attr), NULL, NULL},
 234         /* LDAP attribute name that controls remote access */
 235         {"access_attr", PW_TYPE_STRING_PTR, offsetof(ldap_instance,access_attr), NULL, NULL},
 236         /* file with mapping between LDAP and RADIUS attributes */
 237         {"groupname_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,groupname_attr), NULL, "cn"},
 238         {"groupmembership_filter", PW_TYPE_STRING_PTR, offsetof(ldap_instance,groupmemb_filt), NULL, "(|(&(objectClass=GroupOfNames)(member=%{Ldap-UserDn}))(&(objectClass=GroupOfUniqueNames)(uniquemember=%{Ldap-UserDn})))"},
 239         {"groupmembership_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,groupmemb_attr), NULL, NULL},
 240         {"dictionary_mapping", PW_TYPE_STRING_PTR, offsetof(ldap_instance,dictionary_mapping), NULL, "${confdir}/ldap.attrmap"},
 241         {"ldap_debug", PW_TYPE_INTEGER, offsetof(ldap_instance,ldap_debug), NULL, "0x0000"},
 242         {"ldap_connections_number", PW_TYPE_INTEGER, offsetof(ldap_instance,num_conns), NULL, "5"},
 243         {"compare_check_items", PW_TYPE_BOOLEAN, offsetof(ldap_instance,do_comp), NULL, "no"},
 244         {"access_attr_used_for_allow", PW_TYPE_BOOLEAN, offsetof(ldap_instance,default_allow), NULL, "yes"},
 245
 246         {NULL, -1, 0, NULL, NULL}
 247 };
 248
 249 #define ld_valid                ld_options.ldo_valid
 250 #define LDAP_VALID_SESSION      0x2
 251 #define LDAP_VALID(ld)  ( (ld)->ld_valid == LDAP_VALID_SESSION )
 252
 253 #ifdef FIELDCPY
 254 static void     fieldcpy(char *, char **);
 255 #endif
 256 static VALUE_PAIR *ldap_pairget(LDAP *, LDAPMessage *, TLDAP_RADIUS *,VALUE_PAIR **);
 257 static int ldap_groupcmp(void *, REQUEST *, VALUE_PAIR *, VALUE_PAIR *, VALUE_PAIR *, VALUE_PAIR **);
 258 static int ldap_xlat(void *,REQUEST *, char *, char *,int, RADIUS_ESCAPE_STRING);
 259 static LDAP    *ldap_connect(void *instance, const char *, const char *, int, int *);
 260 static int     read_mappings(ldap_instance* inst);
 261
 262 static inline int ldap_get_conn(LDAP_CONN *conns,LDAP_CONN **ret,void *instance)
 263 {
 264         ldap_instance *inst = instance;
 265         register int i = 0;
 266
 267         for(;i<inst->num_conns;i++){
 268                 if (conns[i].locked == 0 && pthread_mutex_trylock(&(conns[i].mutex)) == 0){
 269                         *ret = &conns[i];
 270                         conns[i].locked = 1;
 271                         DEBUG("ldap_get_conn: Got Id: %d",i);
 272                         return i;
 273                 }
 274         }
 275
 276         return -1;
 277 }
 278
 279 static inline void ldap_release_conn(int i, LDAP_CONN *conns)
 280 {
 281         DEBUG("ldap_release_conn: Release Id: %d",i);
 282         conns[i].locked = 0;
 283         pthread_mutex_unlock(&(conns[i].mutex));
 284 }
 285
 286 /*************************************************************************
 287  *
 288  *      Function: rlm_ldap_instantiate
 289  *
 290  *      Purpose: Uses section of radiusd config file passed as parameter
 291  *               to create an instance of the module.
 292  *
 293  *************************************************************************/
 294 static int
 295 ldap_instantiate(CONF_SECTION * conf, void **instance)
 296 {
 297         ldap_instance  *inst;
 298         int i = 0;
 299         int atts_num = 0;
 300         int reply_map_num = 0;
 301         int check_map_num = 0;
 302         int att_map[3] = {0,0,0};
 303         TLDAP_RADIUS *pair;
 304         char *xlat_name;
 305
 306         inst = rad_malloc(sizeof *inst);
 307
 308         if (cf_section_parse(conf, inst, module_config) < 0) {
 309                 free(inst);
 310                 return -1;
 311         }
 312
 313         if (inst->server == NULL) {
 314                 radlog(L_ERR, "rlm_ldap: missing 'server' directive.");
 315                 free(inst);
 316                 return -1;
 317         }
 318
 319         inst->timeout.tv_usec = 0;
 320         inst->net_timeout.tv_usec = 0;
 321         /* workaround for servers which support LDAPS but not START TLS */
 322         if(inst->port == LDAPS_PORT)
 323                 inst->tls_mode = LDAP_OPT_X_TLS_HARD;
 324          else
 325                 inst->tls_mode = LDAP_OPT_X_TLS_TRY;
 326         inst->reply_item_map = NULL;
 327         inst->check_item_map = NULL;
 328         inst->conns = NULL;
 329
 330         paircompare_register(PW_LDAP_GROUP, PW_USER_NAME, ldap_groupcmp, inst);
 331         DEBUG("conns: %p",inst->conns);
 332
 333         xlat_name = cf_section_name2(conf);
 334         if (xlat_name == NULL) {
 335                 xlat_name = cf_section_name1(conf);
 336                 rad_assert(xlat_name != NULL); /* or all hell breaks loose */
 337         }
 338         inst->xlat_name = strdup(xlat_name);
 339         xlat_register(xlat_name,ldap_xlat,inst);
 340
 341         if (inst->num_conns <= 0){
 342                 radlog(L_ERR, "rlm_ldap: Invalid ldap connections number passed.");
 343                 free(inst);
 344                 return -1;
 345         }
 346         inst->conns = (LDAP_CONN *)malloc(sizeof(LDAP_CONN)*inst->num_conns);
 347         if (inst->conns == NULL){
 348                 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
 349                 free(inst);
 350                 return -1;
 351         }
 352         for(;i<inst->num_conns;i++){
 353                 inst->conns[i].bound = 0;
 354                 inst->conns[i].locked = 0;
 355                 inst->conns[i].failed_conns = 0;
 356                 inst->conns[i].ld = NULL;
 357                 pthread_mutex_init(&inst->conns[i].mutex, NULL);
 358         }
 359
 360         if (read_mappings(inst) != 0) {
 361                 radlog(L_ERR, "rlm_ldap: Reading dictionary mappings from file %s failed",
 362                        inst->dictionary_mapping);
 363                 radlog(L_ERR, "rlm_ldap: Proceeding with no mappings");
 364         }
 365
 366         pair = inst->check_item_map;
 367         while(pair != NULL){
 368                 atts_num++;
 369                 pair = pair->next;
 370         }
 371         check_map_num = (atts_num - 1);
 372         pair = inst->reply_item_map;
 373         while(pair != NULL){
 374                 atts_num++;
 375                 pair = pair->next;
 376         }
 377         reply_map_num = (atts_num - 1);
 378         if (inst->profile_attr)
 379                 atts_num++;
 380         if (inst->passwd_attr)
 381                 atts_num++;
 382         if (inst->access_attr)
 383                 atts_num++;
 384         inst->atts = (char **)malloc(sizeof(char *)*(atts_num + 1));
 385         if (inst->atts == NULL){
 386                 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
 387                 free(inst);
 388                 return -1;
 389         }
 390         pair = inst->check_item_map;
 391         for(i=0;i<atts_num;i++){
 392                 if (i <= check_map_num ){
 393                         inst->atts[i] = pair->attr;
 394                         if (i == check_map_num)
 395                                 pair = inst->reply_item_map;
 396                         else
 397                                 pair = pair->next;
 398                 }
 399                 else if (i <= reply_map_num){
 400                         inst->atts[i] = pair->attr;
 401                         pair = pair->next;
 402                 }
 403                 else{
 404                         if (inst->profile_attr && !att_map[0]){
 405                                 inst->atts[i] = inst->profile_attr;
 406                                 att_map[0] = 1;
 407                         }
 408                         else if (inst->passwd_attr && !att_map[1]){
 409                                 inst->atts[i] = inst->passwd_attr;
 410                                 att_map[1] = 1;
 411                         }
 412                         else if (inst->access_attr && !att_map[2]){
 413                                 inst->atts[i] = inst->access_attr;
 414                                 att_map[2] = 1;
 415                         }
 416                 }
 417         }
 418         inst->atts[atts_num] = NULL;
 419
 420         DEBUG("conns: %p",inst->conns);
 421
 422         *instance = inst;
 423
 424
 425         return 0;
 426 }
 427
 428
 429 /*
 430  * read_mappings(...) reads a ldap<->radius mappings file to inst->reply_item_map and inst->check_item_map
 431  */
 432
 433 #define MAX_LINE_LEN 160
 434 #define GENERIC_ATTRIBUTE_ID "$GENERIC$"
 435
 436 static int
 437 read_mappings(ldap_instance* inst)
 438 {
 439         FILE* mapfile;
 440         char *filename;
 441         /* all buffers are of MAX_LINE_LEN so we can use sscanf without being afraid of buffer overflows */
 442         char buf[MAX_LINE_LEN], itemType[MAX_LINE_LEN], radiusAttribute[MAX_LINE_LEN], ldapAttribute[MAX_LINE_LEN];
 443         int linenumber;
 444
 445         /* open the mappings file for reading */
 446
 447         filename = inst->dictionary_mapping;
 448         DEBUG("rlm_ldap: reading ldap<->radius mappings from file %s", filename);
 449         mapfile = fopen(filename, "r");
 450
 451         if (mapfile == NULL) {
 452                 radlog(L_ERR, "rlm_ldap: Opening file %s failed", filename);
 453                 return -1; /* error */
 454         }
 455
 456         /* read file line by line. Note that if line length exceed MAX_LINE_LEN, line numbers will be mixed up */
 457
 458         linenumber = 0;
 459
 460         while (fgets(buf, sizeof buf, mapfile)!=NULL) {
 461                 char* ptr;
 462                 int token_count;
 463                 TLDAP_RADIUS* pair;
 464
 465                 linenumber++;
 466
 467                 /* strip comments */
 468                 ptr = strchr(buf, '#');
 469                 if (ptr) *ptr = 0;
 470
 471                 /* empty line */
 472                 if (buf[0] == 0) continue;
 473
 474                 /* extract tokens from the string */
 475                 token_count = sscanf(buf, "%s %s %s", itemType, radiusAttribute, ldapAttribute);
 476
 477                 if (token_count <= 0) /* no tokens */
 478                         continue;
 479
 480                 if (token_count != 3) {
 481                         radlog(L_ERR, "rlm_ldap: Skipping %s line %i: %s", filename, linenumber, buf);
 482                         radlog(L_ERR, "rlm_ldap: Expected 3 tokens "
 483                                "(Item type, RADIUS Attribute and LDAP Attribute) but found only %i", token_count);
 484                         continue;
 485                 }
 486
 487                 /* create new TLDAP_RADIUS list node */
 488                 pair = rad_malloc(sizeof(TLDAP_RADIUS));
 489
 490                 pair->attr = strdup(ldapAttribute);
 491                 pair->radius_attr = strdup(radiusAttribute);
 492
 493                 if ( (pair->attr == NULL) || (pair->radius_attr == NULL) ) {
 494                         radlog(L_ERR, "rlm_ldap: Out of memory");
 495                         if (pair->attr) free(pair->attr);
 496                         if (pair->radius_attr) free(pair->radius_attr);
 497                         free(pair);
 498                         fclose(mapfile);
 499                         return -1;
 500                 }
 501
 502                 /* push node to correct list */
 503                 if (strcasecmp(itemType, "checkItem") == 0) {
 504                         pair->next = inst->check_item_map;
 505                         inst->check_item_map = pair;
 506                 } else if (strcasecmp(itemType, "replyItem") == 0) {
 507                         pair->next = inst->reply_item_map;
 508                         inst->reply_item_map = pair;
 509                 } else {
 510                         radlog(L_ERR, "rlm_ldap: file %s: skipping line %i: unknown itemType %s",
 511                                filename, linenumber, itemType);
 512                         free(pair->attr);
 513                         free(pair->radius_attr);
 514                         free(pair);
 515                         continue;
 516                 }
 517
 518                 DEBUG("rlm_ldap: LDAP %s mapped to RADIUS %s",
 519                       pair->attr, pair->radius_attr);
 520         }
 521
 522         fclose(mapfile);
 523
 524         return 0; /* success */
 525 }
 526
 527 static int
 528 perform_search(void *instance, LDAP_CONN *conn, char *search_basedn, int scope, char *filter,
 529                 char **attrs, LDAPMessage ** result)
 530 {
 531         int             res = RLM_MODULE_OK;
 532         int             ldap_errno = 0;
 533         ldap_instance  *inst = instance;
 534         int             search_retry = 0;
 535
 536         *result = NULL;
 537
 538         if (!conn){
 539                 radlog(L_ERR, "rlm_ldap: NULL connection handle passed");
 540                 return RLM_MODULE_FAIL;
 541         }
 542         if (conn->failed_conns > MAX_FAILED_CONNS_START){
 543                 conn->failed_conns++;
 544                 if (conn->failed_conns >= MAX_FAILED_CONNS_END){
 545                         conn->failed_conns = MAX_FAILED_CONNS_RESTART;
 546                         conn->bound = 0;
 547                 }
 548         }
 549 retry:
 550         if (!conn->bound || conn->ld == NULL) {
 551                 DEBUG2("rlm_ldap: attempting LDAP reconnection");
 552                 if (conn->ld){
 553                         DEBUG2("rlm_ldap: closing existing LDAP connection");
 554                         if (inst->cache_timeout >0)
 555                                 ldap_destroy_cache(conn->ld);
 556                         ldap_unbind_s(conn->ld);
 557                 }
 558                 if ((conn->ld = ldap_connect(instance, inst->login, inst->password, 0, &res)) == NULL) {
 559                         radlog(L_ERR, "rlm_ldap: (re)connection attempt failed");
 560                         if (search_retry == 0)
 561                                 conn->failed_conns++;
 562                         return (RLM_MODULE_FAIL);
 563                 }
 564                 conn->bound = 1;
 565                 conn->failed_conns = 0;
 566         }
 567         DEBUG2("rlm_ldap: performing search in %s, with filter %s", search_basedn ? search_basedn : "(null)" , filter);
 568         switch (ldap_search_st(conn->ld, search_basedn, scope, filter, attrs, 0, &(inst->timeout), result)) {
 569         case LDAP_SUCCESS:
 570         case LDAP_NO_SUCH_OBJECT:
 571                 break;
 572         case LDAP_SERVER_DOWN:
 573                 radlog(L_ERR, "rlm_ldap: ldap_search() failed: LDAP connection lost.");
 574                 conn->failed_conns++;
 575                 if (search_retry == 0){
 576                         if (conn->failed_conns <= MAX_FAILED_CONNS_START){
 577                                 radlog(L_INFO, "rlm_ldap: Attempting reconnect");
 578                                 search_retry = 1;
 579                                 conn->bound = 0;
 580                                 ldap_msgfree(*result);
 581                                 goto retry;
 582                         }
 583                 }
 584                 ldap_msgfree(*result);
 585                 return RLM_MODULE_FAIL;
 586         case LDAP_INSUFFICIENT_ACCESS:
 587                 radlog(L_ERR, "rlm_ldap: ldap_search() failed: Insufficient access. Check the identity and password configuration directives.");
 588                 ldap_msgfree(*result);
 589                 return RLM_MODULE_FAIL;
 590         case LDAP_TIMEOUT:
 591                 radlog(L_ERR, "rlm_ldap: ldap_search() failed: Timed out while waiting for server to respond. Please increase the timeout.");
 592                 ldap_msgfree(*result);
 593                 return RLM_MODULE_FAIL;
 594         case LDAP_TIMELIMIT_EXCEEDED:
 595         case LDAP_BUSY:
 596         case LDAP_UNAVAILABLE:
 597                 /* We don't need to reconnect in these cases so we don't set conn->bound */
 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                 ldap_msgfree(*result);
 601                 return (RLM_MODULE_FAIL);
 602         default:
 603                 ldap_get_option(conn->ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
 604                 radlog(L_ERR, "rlm_ldap: ldap_search() failed: %s", ldap_err2string(ldap_errno));
 605                 conn->bound = 0;
 606                 ldap_msgfree(*result);
 607                 return (RLM_MODULE_FAIL);
 608         }
 609
 610         if ((ldap_count_entries(conn->ld, *result)) != 1) {
 611                 DEBUG("rlm_ldap: object not found or got ambiguous search result");
 612                 res = RLM_MODULE_NOTFOUND;
 613                 ldap_msgfree(*result);
 614         }
 615         return res;
 616 }
 617
 618
 619 /*
 620  * ldap_groupcmp(). Implement the Ldap-Group == "group" filter
 621  */
 622
 623 static int ldap_groupcmp(void *instance, REQUEST *req, VALUE_PAIR *request, VALUE_PAIR *check,
 624                 VALUE_PAIR *check_pairs, VALUE_PAIR **reply_pairs)
 625 {
 626         char            filter[MAX_GROUP_STR_LEN];
 627         char            gr_filter[MAX_AUTH_QUERY_LEN];
 628         int             res;
 629         LDAPMessage     *result = NULL;
 630         LDAPMessage     *msg = NULL;
 631         char            basedn[1024];
 632         char            *attrs[] = {"dn",NULL};
 633         ldap_instance   *inst = instance;
 634         LDAP_CONN       *conn;
 635         int             conn_id = -1;
 636
 637         check_pairs = check_pairs;
 638         reply_pairs = reply_pairs;
 639
 640         DEBUG("rlm_ldap: Entering ldap_groupcmp()");
 641
 642         if (check->strvalue == NULL || check->length == 0){
 643                 DEBUG("rlm_ldap::ldap_groupcmp: Illegal group name");
 644                 return 1;
 645         }
 646
 647         if (req == NULL){
 648                 DEBUG("rlm_ldap::ldap_groupcmp: NULL request");
 649                 return 1;
 650         }
 651
 652         if (!radius_xlat(basedn, sizeof(basedn), inst->basedn, req, NULL)) {
 653                 DEBUG("rlm_ldap::ldap_groupcmp: unable to create basedn.");
 654                 return 1;
 655         }
 656
 657         if ((pairfind(req->packet->vps, PW_LDAP_USERDN)) == NULL){
 658                 char            *user_dn = NULL;
 659
 660                 if (!radius_xlat(filter, MAX_AUTH_QUERY_LEN, inst->filter, req, NULL)) {
 661                         DEBUG("rlm_ldap::ldap_groupcmp: unable to create filter");
 662                         return 1;
 663                 }
 664                 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
 665                         radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
 666                         return 1;
 667                 }
 668                 if ((res = perform_search(inst, conn, basedn, LDAP_SCOPE_SUBTREE, filter, attrs, &result)) != RLM_MODULE_OK) {
 669                         DEBUG("rlm_ldap::ldap_groupcmp: search failed");
 670                         ldap_release_conn(conn_id,inst->conns);
 671                         return 1;
 672                 }
 673                 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
 674                         DEBUG("rlm_ldap::ldap_groupcmp: ldap_first_entry() failed");
 675                         ldap_release_conn(conn_id,inst->conns);
 676                         ldap_msgfree(result);
 677                         return 1;
 678                 }
 679                 if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
 680                         DEBUG("rlm_ldap:ldap_groupcmp:: ldap_get_dn() failed");
 681                         ldap_release_conn(conn_id,inst->conns);
 682                         ldap_msgfree(result);
 683                         return 1;
 684                 }
 685                 ldap_release_conn(conn_id,inst->conns);
 686                 /*
 687                 * Adding new attribute containing DN for LDAP object associated with
 688                 * given username
 689                 */
 690                 pairadd(&req->packet->vps, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
 691                 ldap_memfree(user_dn);
 692                 ldap_msgfree(result);
 693         }
 694
 695         if(!radius_xlat(gr_filter, MAX_GROUP_STR_LEN, inst->groupmemb_filt, req, NULL)){
 696                 DEBUG("rlm_ldap::ldap_groupcmp: unable to create filter.");
 697                 return 1;
 698         }
 699
 700         snprintf(filter,MAX_GROUP_STR_LEN - 1, "(&(%s=%s)%s)",inst->groupname_attr,(char *)check->strvalue,gr_filter);
 701
 702         if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
 703                 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
 704                 return 1;
 705         }
 706
 707         if ((res = perform_search(inst, conn, basedn, LDAP_SCOPE_SUBTREE, filter, attrs, &result)) != RLM_MODULE_OK){
 708                 if (res != RLM_MODULE_NOTFOUND){
 709                         DEBUG("rlm_ldap::ldap_groupcmp: Search returned error");
 710                         ldap_release_conn(conn_id,inst->conns);
 711                         return 1;
 712                 }
 713         }
 714         if (res != RLM_MODULE_NOTFOUND)
 715                 ldap_msgfree(result);
 716         ldap_release_conn(conn_id,inst->conns);
 717
 718         if (res == RLM_MODULE_NOTFOUND){
 719                 if (inst->groupmemb_attr == NULL){
 720                         DEBUG("rlm_ldap::ldap_groupcmp: Group %s not found or user is not a member.",(char *)check->strvalue);
 721                         return 1;
 722                 }
 723                 else{
 724                         VALUE_PAIR *user_dn;
 725                         char *group_attrs[] = {inst->groupmemb_attr,NULL};
 726
 727                         user_dn = pairfind(req->packet->vps, PW_LDAP_USERDN);
 728                         if (user_dn != NULL){
 729                                 char **vals;
 730
 731                                 snprintf(filter,MAX_GROUP_STR_LEN - 1, "(objectclass=*)");
 732                                 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
 733                                         radlog(L_ERR, "rlm_ldap: Add ldap connections are in use");
 734                                         return 1;
 735                                 }
 736                                 if ((res = perform_search(inst, conn, user_dn->strvalue, LDAP_SCOPE_BASE, filter, group_attrs, &result)) != RLM_MODULE_OK){
 737                                         DEBUG("rlm_ldap::ldap_groupcmp: Search returned error");
 738                                         ldap_release_conn(conn_id, inst->conns);
 739                                         return 1;
 740                                 }
 741
 742                                 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
 743                                         DEBUG("rlm_ldap::ldap_groupcmp: ldap_first_entry() failed");
 744                                         ldap_release_conn(conn_id,inst->conns);
 745                                         ldap_msgfree(result);
 746                                         return 1;
 747                                 }
 748                                 if ((vals = ldap_get_values(conn->ld, msg, inst->groupmemb_attr)) != NULL) {
 749                                         unsigned int i = 0;
 750                                         char found = 0;
 751
 752                                         for (;i < ldap_count_values(vals);i++){
 753                                                 if (strchr(vals[i],',') != NULL){ /* This looks like a DN */
 754                                                         LDAPMessage *gr_result = NULL;
 755
 756                                                         snprintf(filter,MAX_GROUP_STR_LEN - 1, "(%s=%s)",inst->groupname_attr,(char *)check->strvalue);
 757                                                         if ((res = perform_search(inst, conn, vals[i], LDAP_SCOPE_BASE, filter, attrs, &gr_result)) != RLM_MODULE_OK){
 758                                                                 if (res != RLM_MODULE_NOTFOUND){
 759                                                                         DEBUG("rlm_ldap::ldap_groupcmp: Search returned error");
 760                                                                         ldap_msgfree(result);
 761                                                                         ldap_value_free(vals);
 762                                                                         ldap_release_conn(conn_id, inst->conns);
 763                                                                         return 1;
 764                                                                 }
 765                                                         }
 766                                                         else{
 767                                                                 ldap_msgfree(gr_result);
 768                                                                 found = 1;
 769                                                                 break;
 770                                                         }
 771                                                 }
 772                                                 else{
 773                                                         if (strcmp(vals[i],(char *)check->strvalue) == 0){
 774                                                                 found = 1;
 775                                                                 break;
 776                                                         }
 777                                                 }
 778                                         }
 779                                         ldap_value_free(vals);
 780                                         ldap_msgfree(result);
 781                                         if (found == 0){
 782                                                 DEBUG("rlm_ldap::groupcmp: Group %s not found or user not a member",
 783                                                         (char *)check->strvalue);
 784                                                 ldap_release_conn(conn_id,inst->conns);
 785                                                 return 1;
 786                                         }
 787                                 }
 788                                 else{
 789                                         DEBUG("rlm_ldap::ldap_groupcmp: ldap_get_values() failed");
 790                                         ldap_release_conn(conn_id,inst->conns);
 791                                         ldap_msgfree(result);
 792                                         return 1;
 793                                 }
 794                         }
 795                 }
 796         }
 797
 798
 799         DEBUG("rlm_ldap::ldap_groupcmp: User found in group %s",(char *)check->strvalue);
 800         ldap_release_conn(conn_id,inst->conns);
 801
 802         return 0;
 803 }
 804
 805 /*
 806  * ldap_xlat()
 807  * Do an xlat on an LDAP URL
 808  */
 809
 810 static int ldap_xlat(void *instance, REQUEST *request, char *fmt, char *out, int freespace,
 811                                 RADIUS_ESCAPE_STRING func)
 812 {
 813         char url[MAX_STRING_LEN];
 814         int res;
 815         int ret = 0;
 816         ldap_instance *inst = instance;
 817         LDAPURLDesc *ldap_url;
 818         LDAPMessage *result = NULL;
 819         LDAPMessage *msg = NULL;
 820         char **vals;
 821         int conn_id = -1;
 822         LDAP_CONN *conn;
 823
 824         DEBUG("rlm_ldap: - ldap_xlat");
 825         if (!radius_xlat(url, sizeof(url), fmt, request, func)) {
 826                 radlog (L_ERR, "rlm_ldap: Unable to create LDAP URL.\n");
 827                 return 0;
 828         }
 829         if (!ldap_is_ldap_url(url)){
 830                 radlog (L_ERR, "rlm_ldap: String passed does not look like an LDAP URL.\n");
 831                 return 0;
 832         }
 833         if (ldap_url_parse(url,&ldap_url)){
 834                 radlog (L_ERR, "rlm_ldap: LDAP URL parse failed.\n");
 835                 return 0;
 836         }
 837         if (ldap_url->lud_attrs == NULL || ldap_url->lud_attrs[0] == NULL || \
 838                 ( ldap_url->lud_attrs[1] != NULL || ( ! strlen(ldap_url->lud_attrs[0]) || \
 839                 ! strcmp(ldap_url->lud_attrs[0],"*") ) ) ){
 840                 radlog (L_ERR, "rlm_ldap: Invalid Attribute(s) request.\n");
 841                 ldap_free_urldesc(ldap_url);
 842                 return 0;
 843         }
 844         if (ldap_url->lud_host){
 845                 if (strncmp(inst->server,ldap_url->lud_host,strlen(inst->server)) != 0 || \
 846                                 ldap_url->lud_port != inst->port){
 847                         DEBUG("rlm_ldap: Requested server/port is not known to this module instance.");
 848                         ldap_free_urldesc(ldap_url);
 849                         return 0;
 850                 }
 851         }
 852         if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
 853                 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
 854                 ldap_free_urldesc(ldap_url);
 855                 return 0;
 856         }
 857         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){
 858                 if (res == RLM_MODULE_NOTFOUND){
 859                         DEBUG("rlm_ldap: Search returned not found");
 860                         ldap_free_urldesc(ldap_url);
 861                         ldap_release_conn(conn_id,inst->conns);
 862                         return 0;
 863                 }
 864                 DEBUG("rlm_ldap: Search returned error");
 865                 ldap_free_urldesc(ldap_url);
 866                 ldap_release_conn(conn_id,inst->conns);
 867                 return 0;
 868         }
 869         if ((msg = ldap_first_entry(conn->ld, result)) == NULL){
 870                 DEBUG("rlm_ldap: ldap_first_entry() failed");
 871                 ldap_msgfree(result);
 872                 ldap_free_urldesc(ldap_url);
 873                 ldap_release_conn(conn_id,inst->conns);
 874                 return 0;
 875         }
 876         if ((vals = ldap_get_values(conn->ld, msg, ldap_url->lud_attrs[0])) != NULL) {
 877                 ret = strlen(vals[0]);
 878                 if (ret > freespace){
 879                         DEBUG("rlm_ldap: Insufficient string space");
 880                         ldap_free_urldesc(ldap_url);
 881                         ldap_value_free(vals);
 882                         ldap_msgfree(result);
 883                         ldap_release_conn(conn_id,inst->conns);
 884                         return 0;
 885                 }
 886                 DEBUG("rlm_ldap: Adding attribute %s, value: %s",ldap_url->lud_attrs[0],vals[0]);
 887                 strncpy(out,vals[0],ret);
 888                 ldap_value_free(vals);
 889         }
 890         else
 891                 ret = 0;
 892
 893         ldap_msgfree(result);
 894         ldap_free_urldesc(ldap_url);
 895         ldap_release_conn(conn_id,inst->conns);
 896
 897         DEBUG("rlm_ldap: - ldap_xlat end");
 898
 899         return ret;
 900 }
 901
 902
 903 /******************************************************************************
 904  *
 905  *      Function: rlm_ldap_authorize
 906  *
 907  *      Purpose: Check if user is authorized for remote access
 908  *
 909  ******************************************************************************/
 910 static int
 911 ldap_authorize(void *instance, REQUEST * request)
 912 {
 913         LDAPMessage     *result = NULL;
 914         LDAPMessage     *msg = NULL;
 915         LDAPMessage     *def_msg = NULL;
 916         LDAPMessage     *def_attr_msg = NULL;
 917         LDAPMessage     *def_result = NULL;
 918         LDAPMessage     *def_attr_result = NULL;
 919         ldap_instance   *inst = instance;
 920         char            *user_dn = NULL;
 921         char            filter[MAX_AUTH_QUERY_LEN];
 922         char            basedn[1024];
 923         VALUE_PAIR      *check_tmp;
 924         VALUE_PAIR      *reply_tmp;
 925         int             res;
 926         VALUE_PAIR      **check_pairs, **reply_pairs;
 927         char            **vals;
 928         VALUE_PAIR      *module_fmsg_vp;
 929         VALUE_PAIR      *user_profile;
 930         char            module_fmsg[MAX_STRING_LEN];
 931         LDAP_CONN       *conn;
 932         int             conn_id = -1;
 933
 934         DEBUG("rlm_ldap: - authorize");
 935
 936         if (!request->username){
 937                 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Name\" is required for authentication.\n");
 938                 return RLM_MODULE_INVALID;
 939         }
 940
 941         check_pairs = &request->config_items;
 942         reply_pairs = &request->reply->vps;
 943
 944         /*
 945          * Check for valid input, zero length names not permitted
 946          */
 947         if (request->username->strvalue == 0) {
 948                 radlog(L_ERR, "rlm_ldap: zero length username not permitted\n");
 949                 return RLM_MODULE_INVALID;
 950         }
 951         DEBUG("rlm_ldap: performing user authorization for %s",
 952                request->username->strvalue);
 953
 954         if (!radius_xlat(filter, sizeof(filter), inst->filter,
 955                          request, NULL)) {
 956                 radlog (L_ERR, "rlm_ldap: unable to create filter.\n");
 957                 return RLM_MODULE_INVALID;
 958         }
 959
 960         if (!radius_xlat(basedn, sizeof(basedn), inst->basedn,
 961                          request, NULL)) {
 962                 radlog (L_ERR, "rlm_ldap: unable to create basedn.\n");
 963                 return RLM_MODULE_INVALID;
 964         }
 965
 966         if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
 967                 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
 968                 return RLM_MODULE_FAIL;
 969         }
 970         if ((res = perform_search(instance, conn, basedn, LDAP_SCOPE_SUBTREE, filter, inst->atts, &result)) != RLM_MODULE_OK) {
 971                 DEBUG("rlm_ldap: search failed");
 972                 if (res == RLM_MODULE_NOTFOUND){
 973                         snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: User not found");
 974                         module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
 975                         pairadd(&request->packet->vps, module_fmsg_vp);
 976                 }
 977                 ldap_release_conn(conn_id,inst->conns);
 978                 return (res);
 979         }
 980         if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
 981                 DEBUG("rlm_ldap: ldap_first_entry() failed");
 982                 ldap_msgfree(result);
 983                 ldap_release_conn(conn_id,inst->conns);
 984                 return RLM_MODULE_FAIL;
 985         }
 986         if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
 987                 DEBUG("rlm_ldap: ldap_get_dn() failed");
 988                 ldap_msgfree(result);
 989                 ldap_release_conn(conn_id,inst->conns);
 990                 return RLM_MODULE_FAIL;
 991         }
 992         /*
 993          * Adding new attribute containing DN for LDAP object associated with
 994          * given username
 995          */
 996         pairadd(&request->packet->vps, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
 997         ldap_memfree(user_dn);
 998
 999
1000         /* Remote access is controled by attribute of the user object */
1001         if (inst->access_attr) {
1002                 if ((vals = ldap_get_values(conn->ld, msg, inst->access_attr)) != NULL) {
1003                         if (inst->default_allow){
1004                                 DEBUG("rlm_ldap: checking if remote access for %s is allowed by %s", request->username->strvalue, inst->access_attr);
1005                                 if (!strncmp(vals[0], "FALSE", 5)) {
1006                                         DEBUG("rlm_ldap: dialup access disabled");
1007                                         snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
1008                                         module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1009                                         pairadd(&request->packet->vps, module_fmsg_vp);
1010                                         ldap_msgfree(result);
1011                                         ldap_value_free(vals);
1012                                         ldap_release_conn(conn_id,inst->conns);
1013                                         return RLM_MODULE_USERLOCK;
1014                                 }
1015                                 ldap_value_free(vals);
1016                         }
1017                         else{
1018                                 DEBUG("rlm_ldap: %s attribute exists - access denied by default", inst->access_attr);
1019                                 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
1020                                 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1021                                 pairadd(&request->packet->vps, module_fmsg_vp);
1022                                 ldap_msgfree(result);
1023                                 ldap_value_free(vals);
1024                                 ldap_release_conn(conn_id,inst->conns);
1025                                 return RLM_MODULE_USERLOCK;
1026                         }
1027                 } else {
1028                         if (inst->default_allow){
1029                                 DEBUG("rlm_ldap: no %s attribute - access denied by default", inst->access_attr);
1030                                 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
1031                                 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1032                                 pairadd(&request->packet->vps, module_fmsg_vp);
1033                                 ldap_msgfree(result);
1034                                 ldap_release_conn(conn_id,inst->conns);
1035                                 return RLM_MODULE_USERLOCK;
1036                         }
1037                 }
1038         }
1039         if (inst->cache_timeout >0)
1040                 ldap_enable_cache(conn->ld, inst->cache_timeout, inst->cache_size);
1041
1042         /*
1043          * Check for the default profile entry. If it exists then add the
1044          * attributes it contains in the check and reply pairs
1045          */
1046
1047         user_profile = pairfind(request->config_items, PW_USER_PROFILE);
1048         if (inst->default_profile || user_profile){
1049                 char *profile = inst->default_profile;
1050
1051                 strncpy(filter,"(objectclass=radiusprofile)",MAX_AUTH_QUERY_LEN);
1052                 if (user_profile)
1053                         profile = user_profile->strvalue;
1054                 if (profile && strlen(profile)){
1055                         if ((res = perform_search(instance, conn,
1056                                 profile, LDAP_SCOPE_BASE,
1057                                 filter, inst->atts, &def_result)) == RLM_MODULE_OK){
1058                                 if ((def_msg = ldap_first_entry(conn->ld,def_result))){
1059                                         if ((check_tmp = ldap_pairget(conn->ld,def_msg,inst->check_item_map,check_pairs)))
1060                                                 pairadd(check_pairs,check_tmp);
1061                                         if ((reply_tmp = ldap_pairget(conn->ld,def_msg,inst->reply_item_map,reply_pairs)))
1062                                                 pairadd(reply_pairs,reply_tmp);
1063                                 }
1064                                 ldap_msgfree(def_result);
1065                         } else
1066                                 DEBUG("rlm_ldap: default_profile/user-profile search failed");
1067                 }
1068         }
1069
1070         /*
1071          * Check for the profile attribute. If it exists, we assume that it
1072          * contains the DN of an entry containg a profile for the user. That
1073          * way we can have different general profiles for various user groups
1074          * (students,faculty,staff etc)
1075          */
1076
1077         if (inst->profile_attr){
1078                 if ((vals = ldap_get_values(conn->ld, msg, inst->profile_attr)) != NULL && strlen(vals[0])) {
1079                         strncpy(filter,"(objectclass=radiusprofile)",MAX_AUTH_QUERY_LEN);
1080                         if (inst->cache_timeout >0)
1081                                 ldap_enable_cache(conn->ld, inst->cache_timeout, inst->cache_size);
1082                         if ((res = perform_search(instance, conn,
1083                                 vals[0], LDAP_SCOPE_BASE,
1084                                 filter, inst->atts, &def_attr_result)) == RLM_MODULE_OK){
1085                                 if ((def_attr_msg = ldap_first_entry(conn->ld,def_attr_result))){
1086                                         if ((check_tmp = ldap_pairget(conn->ld,def_attr_msg,inst->check_item_map,check_pairs)))
1087                                                 pairadd(check_pairs,check_tmp);
1088                                         if ((reply_tmp = ldap_pairget(conn->ld,def_attr_msg,inst->reply_item_map,reply_pairs)))
1089                                                 pairadd(reply_pairs,reply_tmp);
1090                                 }
1091                                 ldap_msgfree(def_attr_result);
1092                         } else
1093                                 DEBUG("rlm_ldap: profile_attribute search failed");
1094                         ldap_value_free(vals);
1095                 }
1096         }
1097         if (inst->cache_timeout >0)
1098                 ldap_disable_cache(conn->ld);
1099         if (inst->passwd_attr && strlen(inst->passwd_attr)){
1100                 VALUE_PAIR *passwd_item;
1101
1102                 if ((passwd_item = pairfind(request->config_items, PW_PASSWORD)) == NULL){
1103                         char **passwd_vals;
1104                         char *passwd_val = NULL;
1105                         int passwd_len;
1106
1107                         if ((passwd_vals = ldap_get_values(conn->ld,msg,inst->passwd_attr)) != NULL){
1108                                 unsigned int i=0;
1109                                 while(passwd_vals[i] != NULL){
1110                                         if (strlen(passwd_vals[i])){
1111                                                 passwd_val = passwd_vals[i];
1112
1113                                                 if (inst->passwd_hdr && strlen(inst->passwd_hdr)){
1114                                                         passwd_val = strstr(passwd_val,inst->passwd_hdr);
1115                                                         if (passwd_val != NULL)
1116                                                                 passwd_val += strlen(inst->passwd_hdr);
1117                                                         else
1118                                                                 DEBUG("rlm_ldap: Password header not found in password %s for user %s", passwd_vals[0],request->username->strvalue);
1119                                                 }
1120                                                 if (passwd_val){
1121                                                         if ((passwd_item = paircreate(PW_PASSWORD,PW_TYPE_STRING)) == NULL){
1122                                                                 radlog(L_ERR|L_CONS, "no memory");
1123                                                                 ldap_value_free(passwd_vals);
1124                                                                 ldap_msgfree(result);
1125                                                                 ldap_release_conn(conn_id,inst->conns);
1126                                                                 return RLM_MODULE_FAIL;
1127                                                         }
1128                                                         passwd_len = strlen(passwd_val);
1129                                                         strncpy(passwd_item->strvalue,passwd_val,MAX_STRING_LEN - 1);
1130                                                         passwd_item->length = (passwd_len > (MAX_STRING_LEN - 1)) ? (MAX_STRING_LEN - 1) : passwd_len;
1131                                                         pairadd(&request->config_items,passwd_item);
1132                                                         DEBUG("rlm_ldap: Added password %s in check items",passwd_item->strvalue);
1133                                                 }
1134                                         }
1135                                         i++;
1136                                 }
1137                                 ldap_value_free(passwd_vals);
1138                         }
1139                 }
1140         }
1141
1142
1143
1144         DEBUG("rlm_ldap: looking for check items in directory...");
1145
1146         if ((check_tmp = ldap_pairget(conn->ld, msg, inst->check_item_map,check_pairs)) != NULL)
1147                 pairadd(check_pairs, check_tmp);
1148
1149
1150         DEBUG("rlm_ldap: looking for reply items in directory...");
1151
1152
1153         if ((reply_tmp = ldap_pairget(conn->ld, msg, inst->reply_item_map,reply_pairs)) != NULL)
1154                 pairadd(reply_pairs, reply_tmp);
1155
1156        if (inst->do_comp && paircmp(request,request->packet->vps,*check_pairs,reply_pairs) != 0){
1157                 DEBUG("rlm_ldap: Pairs do not match. Rejecting user.");
1158                 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Pairs do not match");
1159                 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1160                 pairadd(&request->packet->vps, module_fmsg_vp);
1161                 ldap_msgfree(result);
1162                 ldap_release_conn(conn_id,inst->conns);
1163
1164                 return RLM_MODULE_REJECT;
1165         }
1166
1167         /*
1168          * Module should default to LDAP authentication if no Auth-Type
1169          * specified
1170          */
1171         if (pairfind(*check_pairs, PW_AUTHTYPE) == NULL)
1172                 pairadd(check_pairs, pairmake("Auth-Type", "LDAP", T_OP_EQ));
1173
1174
1175         DEBUG("rlm_ldap: user %s authorized to use remote access",
1176               request->username->strvalue);
1177         ldap_msgfree(result);
1178         ldap_release_conn(conn_id,inst->conns);
1179
1180         return RLM_MODULE_OK;
1181 }
1182
1183 /*****************************************************************************
1184  *
1185  *      Function: rlm_ldap_authenticate
1186  *
1187  *      Purpose: Check the user's password against ldap database
1188  *
1189  *****************************************************************************/
1190 static int
1191 ldap_authenticate(void *instance, REQUEST * request)
1192 {
1193         LDAP           *ld_user;
1194         LDAPMessage    *result, *msg;
1195         ldap_instance  *inst = instance;
1196         char           *user_dn, *attrs[] = {"uid", NULL};
1197         char            filter[MAX_AUTH_QUERY_LEN];
1198         char            basedn[1024];
1199         int             res;
1200         VALUE_PAIR     *vp_user_dn;
1201         VALUE_PAIR      *module_fmsg_vp;
1202         char            module_fmsg[MAX_STRING_LEN];
1203         LDAP_CONN       *conn;
1204         int             conn_id = -1;
1205
1206         DEBUG("rlm_ldap: - authenticate");
1207         /*
1208          * Ensure that we're being passed a plain-text password, and not
1209          * anything else.
1210          */
1211
1212         if (!request->username) {
1213                 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Name\" is required for authentication.\n");
1214                 return RLM_MODULE_INVALID;
1215         }
1216
1217         if (!request->password){
1218                 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Password\" is required for authentication.");
1219                 return RLM_MODULE_INVALID;
1220         }
1221
1222         if(request->password->attribute != PW_PASSWORD) {
1223                 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Password\" is required for authentication. Cannot use \"%s\".", request->password->name);
1224                 return RLM_MODULE_INVALID;
1225         }
1226
1227         if (request->password->length == 0) {
1228                 radlog(L_ERR, "rlm_ldap: empty password supplied");
1229                 return RLM_MODULE_INVALID;
1230         }
1231
1232         DEBUG("rlm_ldap: login attempt by \"%s\" with password \"%s\"",
1233                request->username->strvalue, request->password->strvalue);
1234
1235         while((vp_user_dn = pairfind(request->packet->vps, PW_LDAP_USERDN)) == NULL) {
1236                 if (!radius_xlat(filter, sizeof(filter), inst->filter,
1237                                 request, NULL)) {
1238                         radlog (L_ERR, "rlm_ldap: unable to create filter.\n");
1239                         return RLM_MODULE_INVALID;
1240                 }
1241
1242                 if (!radius_xlat(basedn, sizeof(basedn), inst->basedn,
1243                                 request, NULL)) {
1244                         radlog (L_ERR, "rlm_ldap: unable to create basedn.\n");
1245                         return RLM_MODULE_INVALID;
1246                 }
1247
1248                 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
1249                         radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
1250                         return RLM_MODULE_FAIL;
1251                 }
1252                 if ((res = perform_search(instance, conn, basedn, LDAP_SCOPE_SUBTREE, filter, attrs, &result)) != RLM_MODULE_OK) {
1253                         if (res == RLM_MODULE_NOTFOUND){
1254                                 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: User not found");
1255                                 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1256                                 pairadd(&request->packet->vps, module_fmsg_vp);
1257                         }
1258                         ldap_release_conn(conn_id,inst->conns);
1259                         return (res);
1260                 }
1261                 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
1262                         ldap_msgfree(result);
1263                         ldap_release_conn(conn_id,inst->conns);
1264                         return RLM_MODULE_FAIL;
1265                 }
1266                 if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
1267                         DEBUG("rlm_ldap: ldap_get_dn() failed");
1268                         ldap_msgfree(result);
1269                         ldap_release_conn(conn_id,inst->conns);
1270                         return RLM_MODULE_FAIL;
1271                 }
1272                 ldap_release_conn(conn_id,inst->conns);
1273                 pairadd(&request->packet->vps, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
1274                 ldap_memfree(user_dn);
1275                 ldap_msgfree(result);
1276         }
1277
1278         user_dn = vp_user_dn->strvalue;
1279
1280         DEBUG("rlm_ldap: user DN: %s", user_dn);
1281
1282         ld_user = ldap_connect(instance, user_dn, request->password->strvalue,
1283                                1, &res);
1284         if (ld_user == NULL){
1285                 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Bind as user failed");
1286                 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1287                 pairadd(&request->packet->vps, module_fmsg_vp);
1288                 return (res);
1289         }
1290
1291         DEBUG("rlm_ldap: user %s authenticated succesfully",
1292               request->username->strvalue);
1293         ldap_unbind_s(ld_user);
1294
1295         return RLM_MODULE_OK;
1296 }
1297
1298 static LDAP    *
1299 ldap_connect(void *instance, const char *dn, const char *password, int auth, int *result)
1300 {
1301         ldap_instance  *inst = instance;
1302         LDAP           *ld;
1303         int             msgid, rc, ldap_version;
1304         int             ldap_errno = 0;
1305         LDAPMessage    *res;
1306
1307         DEBUG("rlm_ldap: (re)connect to %s:%d, authentication %d", inst->server, inst->port, auth);
1308         if ((ld = ldap_init(inst->server, inst->port)) == NULL) {
1309                 radlog(L_ERR, "rlm_ldap: ldap_init() failed");
1310                 *result = RLM_MODULE_FAIL;
1311                 return (NULL);
1312         }
1313         if (ldap_set_option(ld, LDAP_OPT_NETWORK_TIMEOUT, (void *) &(inst->net_timeout)) != LDAP_OPT_SUCCESS) {
1314                 radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_NETWORK_TIMEOUT %ld.%ld", inst->net_timeout.tv_sec, inst->net_timeout.tv_usec);
1315         }
1316         if (ldap_set_option(ld, LDAP_OPT_TIMELIMIT, (void *) &(inst->timelimit)) != LDAP_OPT_SUCCESS) {
1317                 radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_TIMELIMIT %d", inst->timelimit);
1318         }
1319         if (inst->ldap_debug && ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, &(inst->ldap_debug)) != LDAP_OPT_SUCCESS) {
1320                 radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_DEBUG_LEVEL %d", inst->ldap_debug);
1321         }
1322 #ifdef HAVE_LDAP_START_TLS
1323         if(inst->tls_mode) {
1324                 DEBUG("rlm_ldap: setting TLS mode to %d", inst->tls_mode);
1325                 if(ldap_set_option(ld, LDAP_OPT_X_TLS,
1326                            (void *) &(inst->tls_mode)) != LDAP_OPT_SUCCESS) {
1327                         ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
1328                         radlog(L_ERR, "rlm_ldap: could not set LDAP_OPT_X_TLS option %s", ldap_err2string(ldap_errno));
1329                 }
1330         }
1331
1332         if (inst->start_tls) {
1333                 DEBUG("rlm_ldap: starting TLS");
1334                 ldap_version = LDAP_VERSION3;
1335                 if (ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION, &ldap_version) == LDAP_SUCCESS) {
1336                         rc = ldap_start_tls_s(ld, NULL, NULL);
1337                         if (rc != LDAP_SUCCESS) {
1338                                 DEBUG("rlm_ldap: ldap_start_tls_s()");
1339                                 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
1340                                 radlog(L_ERR, "rlm_ldap: could not start TLS %s", ldap_err2string(ldap_errno));
1341                                 *result = RLM_MODULE_FAIL;
1342                                 ldap_unbind_s(ld);
1343                                 return (NULL);
1344                         }
1345                 }
1346         }
1347 #endif /* HAVE_LDAP_START_TLS */
1348
1349         DEBUG("rlm_ldap: bind as %s/%s to %s:%d", dn, password, inst->server, inst->port);
1350         msgid = ldap_bind(ld, dn, password,LDAP_AUTH_SIMPLE);
1351         if (msgid == -1) {
1352                 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
1353                 radlog(L_ERR, "rlm_ldap: %s bind to %s:%d failed: %s",
1354                          dn, inst->server, inst->port,
1355                          ldap_err2string(ldap_errno));
1356                 *result = RLM_MODULE_FAIL;
1357                 ldap_unbind_s(ld);
1358                 return (NULL);
1359         }
1360         DEBUG("rlm_ldap: waiting for bind result ...");
1361
1362         rc = ldap_result(ld, msgid, 1, &(inst->timeout), &res);
1363
1364         if(rc < 1) {
1365                 DEBUG("rlm_ldap: ldap_result()");
1366                 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
1367                 radlog(L_ERR, "rlm_ldap: %s bind to %s:%d failed: %s",
1368                         dn, inst->server, inst->port,
1369                         (rc == 0) ? "timeout" : ldap_err2string(ldap_errno));
1370                 *result = RLM_MODULE_FAIL;
1371                 ldap_unbind_s(ld);
1372                 return (NULL);
1373         }
1374         ldap_errno = ldap_result2error(ld, res, 1);
1375         switch (ldap_errno) {
1376         case LDAP_SUCCESS:
1377                 *result = RLM_MODULE_OK;
1378                 break;
1379
1380         case LDAP_INVALID_CREDENTIALS:
1381                 if (auth)
1382                         *result = RLM_MODULE_REJECT;
1383                 else {
1384                         radlog(L_ERR, "rlm_ldap: LDAP login failed: check login, password settings in ldap section of radiusd.conf");
1385                         *result = RLM_MODULE_FAIL;
1386                 }
1387                 break;
1388
1389         default:
1390                 radlog(L_ERR,"rlm_ldap: %s bind to %s:%d failed %s",
1391                         dn, inst->server, inst->port,
1392                         ldap_err2string(ldap_errno));
1393                 *result = RLM_MODULE_FAIL;
1394         }
1395
1396         if (*result != RLM_MODULE_OK) {
1397                 ldap_unbind_s(ld);
1398                 ld = NULL;
1399         }
1400         return ld;
1401 }
1402
1403 /*****************************************************************************
1404  *
1405  *      Detach from the LDAP server and cleanup internal state.
1406  *
1407  *****************************************************************************/
1408 static int
1409 ldap_detach(void *instance)
1410 {
1411         ldap_instance  *inst = instance;
1412         TLDAP_RADIUS *pair, *nextpair;
1413
1414         if (inst->server)
1415                 free((char *) inst->server);
1416         if (inst->login)
1417                 free((char *) inst->login);
1418         if (inst->password)
1419                 free((char *) inst->password);
1420         if (inst->basedn)
1421                 free((char *) inst->basedn);
1422         if (inst->dictionary_mapping)
1423                 free(inst->dictionary_mapping);
1424         if (inst->filter)
1425                 free((char *) inst->filter);
1426         if (inst->passwd_hdr)
1427                 free((char *) inst->passwd_hdr);
1428         if (inst->passwd_attr)
1429                 free((char *) inst->passwd_attr);
1430         if (inst->groupname_attr)
1431                 free((char *) inst->groupname_attr);
1432         if (inst->groupmemb_filt)
1433                 free((char *) inst->groupmemb_filt);
1434         if (inst->groupmemb_attr)
1435                 free((char *) inst->groupmemb_attr);
1436         if (inst->conns){
1437                 int i=0;
1438
1439                 for(;i<inst->num_conns;i++){
1440                         if (inst->conns[i].ld){
1441                                 if (inst->cache_timeout >0)
1442                                         ldap_destroy_cache(inst->conns[i].ld);
1443                                 ldap_unbind_s(inst->conns[i].ld);
1444                         }
1445                         pthread_mutex_destroy(&inst->conns[i].mutex);
1446                 }
1447                 free(inst->conns);
1448         }
1449
1450         pair = inst->check_item_map;
1451
1452         while (pair != NULL) {
1453                 nextpair = pair->next;
1454                 free(pair->attr);
1455                 free(pair->radius_attr);
1456                 free(pair);
1457                 pair = nextpair;
1458         }
1459
1460         pair = inst->reply_item_map;
1461
1462         while (pair != NULL) {
1463                 nextpair = pair->next;
1464                 free(pair->attr);
1465                 free(pair->radius_attr);
1466                 free(pair);
1467                 pair = nextpair;
1468         }
1469
1470         if (inst->atts){
1471                 int i = 0;
1472
1473                 while(inst->atts[i])
1474                         free(inst->atts[i++]);
1475                 free(inst->atts);
1476         }
1477
1478         paircompare_unregister(PW_LDAP_GROUP, ldap_groupcmp);
1479         xlat_unregister(inst->xlat_name,ldap_xlat);
1480         free(inst->xlat_name);
1481
1482         free(inst);
1483
1484         return 0;
1485 }
1486
1487 #ifdef FIELDCPY
1488 static void
1489 fieldcpy(char *string, char **uptr)
1490 {
1491         char           *ptr;
1492
1493         ptr = *uptr;
1494         while (*ptr == ' ' || *ptr == '\t') {
1495                 ptr++;
1496         }
1497         if (*ptr == '"') {
1498                 ptr++;
1499                 while (*ptr != '"' && *ptr != '\0' && *ptr != '\n') {
1500                         *string++ = *ptr++;
1501                 }
1502                 *string = '\0';
1503                 if (*ptr == '"') {
1504                         ptr++;
1505                 }
1506                 *uptr = ptr;
1507                 return;
1508         }
1509         while (*ptr != ' ' && *ptr != '\t' && *ptr != '\0' && *ptr != '\n' &&
1510                *ptr != '=' && *ptr != ',') {
1511                 *string++ = *ptr++;
1512         }
1513         *string = '\0';
1514         *uptr = ptr;
1515         return;
1516 }
1517 #endif
1518 /*****************************************************************************
1519  *      Get RADIUS attributes from LDAP object
1520  *      ( according to draft-adoba-radius-05.txt
1521  *        <http://www.ietf.org/internet-drafts/draft-adoba-radius-05.txt> )
1522  *
1523  *****************************************************************************/
1524
1525 static VALUE_PAIR *
1526 ldap_pairget(LDAP * ld, LDAPMessage * entry,
1527              TLDAP_RADIUS * item_map, VALUE_PAIR **pairs)
1528 {
1529         char          **vals;
1530         int             vals_count;
1531         int             vals_idx;
1532         char           *ptr;
1533         TLDAP_RADIUS   *element;
1534         LRAD_TOKEN      token;
1535         int             is_generic_attribute;
1536         char            value[256];
1537         VALUE_PAIR     *pairlist = NULL;
1538         VALUE_PAIR     *newpair = NULL;
1539
1540         /* check if there is a mapping from this LDAP attribute to a RADIUS attribute */
1541         for (element = item_map; element != NULL; element = element->next) {
1542         if ((vals = ldap_get_values(ld,entry,element->attr)) != NULL){
1543                         /* check whether this is a one-to-one-mapped ldap attribute or a generic
1544                            attribute and set flag accordingly */
1545
1546                         if (strcasecmp(element->radius_attr, GENERIC_ATTRIBUTE_ID)==0)
1547                                 is_generic_attribute = 1;
1548                         else
1549                                 is_generic_attribute = 0;
1550
1551                         /* find out how many values there are for the attribute and extract all of them */
1552
1553                         vals_count = ldap_count_values(vals);
1554
1555                         for (vals_idx = 0; vals_idx < vals_count; vals_idx++) {
1556                                 ptr = vals[vals_idx];
1557
1558                                 if (is_generic_attribute) {
1559                                         /* this is a generic attribute */
1560                                         LRAD_TOKEN dummy; /* makes pairread happy */
1561
1562                                         /* not sure if using pairread here is ok ... */
1563                                         if ( (newpair = pairread(&ptr, &dummy)) != NULL) {
1564                                                 DEBUG("rlm_ldap: extracted attribute %s from generic item %s",
1565                                                       newpair->name, vals[vals_idx]);
1566                                                 pairadd(&pairlist, newpair);
1567                                         } else {
1568                                                 radlog(L_ERR, "rlm_ldap: parsing %s failed: %s",
1569                                                        element->attr, vals[vals_idx]);
1570                                         }
1571                                 } else {
1572                                         /* this is a one-to-one-mapped attribute */
1573                                         token = gettoken(&ptr, value, sizeof(value) - 1);
1574                                         if (token < T_EQSTART || token > T_EQEND) {
1575                                                 token = T_OP_EQ;
1576                                         } else {
1577                                                 gettoken(&ptr, value, sizeof(value) - 1);
1578                                         }
1579                                         if (value[0] == 0) {
1580                                                 DEBUG("rlm_ldap: Attribute %s has no value", element->attr);
1581                                                 break;
1582                                         }
1583                                         DEBUG("rlm_ldap: Adding %s as %s, value %s & op=%d", element->attr, element->radius_attr, value, token);
1584                                                 if ((newpair = pairmake(element->radius_attr, value, token)) == NULL)
1585                                                 continue;
1586                                         if (! vals_idx){
1587                                                 pairdelete(pairs,newpair->attribute);
1588                                         }
1589                                         pairadd(&pairlist, newpair);
1590                                 }
1591                         }
1592                         ldap_value_free(vals);
1593                 }
1594         }
1595
1596         return (pairlist);
1597 }
1598
1599 /* globally exported name */
1600 module_t        rlm_ldap = {
1601         "LDAP",
1602         RLM_TYPE_THREAD_SAFE,   /* type: reserved        */
1603         NULL,                   /* initialization        */
1604         ldap_instantiate,       /* instantiation         */
1605         {
1606                 ldap_authenticate,      /* authentication        */
1607                 ldap_authorize,         /* authorization         */
1608                 NULL,                   /* preaccounting         */
1609                 NULL,                   /* accounting            */
1610                 NULL,                   /* checksimul            */
1611                 NULL,                   /* pre-proxy             */
1612                 NULL,                   /* post-proxy            */
1613                 NULL                    /* post-auth             */
1614         },
1615         ldap_detach,            /* detach                */
1616         NULL,                   /* destroy               */
1617 };