src/openldap.c

   1 /**
   2  * collectd - src/openldap.c
   3  * Copyright (C) 2011       Kimo Rosenbaum
   4  * Copyright (C) 2014       Marc Fournier
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *   Kimo Rosenbaum <kimor79 at yahoo.com>
  26  *   Marc Fournier <marc.fournier at camptocamp.com>
  27  **/
  28
  29 #include "collectd.h"
  30 #include "common.h"
  31 #include "plugin.h"
  32 #include "configfile.h"
  33
  34 #include <lber.h>
  35 #include <ldap.h>
  36
  37 struct cldap_s /* {{{ */
  38 {
  39         char *name;
  40
  41         char *binddn;
  42         char *password;
  43         char *cacert;
  44         char *host;
  45         int   state;
  46         _Bool starttls;
  47         int   timeout;
  48         char *url;
  49         _Bool verifyhost;
  50         int   version;
  51
  52         LDAP *ld;
  53 };
  54 typedef struct cldap_s cldap_t; /* }}} */
  55
  56 static void cldap_free (cldap_t *st) /* {{{ */
  57 {
  58         if (st == NULL)
  59                 return;
  60
  61         sfree (st->binddn);
  62         sfree (st->password);
  63         sfree (st->cacert);
  64         sfree (st->host);
  65         sfree (st->name);
  66         sfree (st->url);
  67         if (st->ld)
  68                 ldap_memfree (st->ld);
  69         sfree (st);
  70 } /* }}} void cldap_free */
  71
  72 /* initialize ldap for each host */
  73 static int cldap_init_host (cldap_t *st) /* {{{ */
  74 {
  75         LDAP *ld;
  76         int rc;
  77
  78         if (st->state && st->ld)
  79         {
  80                 DEBUG ("openldap plugin: Already connected to %s", st->url);
  81                 return (0);
  82         }
  83
  84         rc = ldap_initialize (&ld, st->url);
  85         if (rc != LDAP_SUCCESS)
  86         {
  87                 ERROR ("openldap plugin: ldap_initialize failed: %s",
  88                         ldap_err2string (rc));
  89                 st->state = 0;
  90                 ldap_unbind_ext_s (ld, NULL, NULL);
  91                 return (-1);
  92         }
  93
  94         st->ld = ld;
  95
  96         ldap_set_option (st->ld, LDAP_OPT_PROTOCOL_VERSION, &st->version);
  97
  98         ldap_set_option (st->ld, LDAP_OPT_TIMEOUT,
  99                 &(const struct timeval){st->timeout, 0});
 100
 101         ldap_set_option (st->ld, LDAP_OPT_RESTART, LDAP_OPT_ON);
 102
 103         if (st->cacert != NULL)
 104                 ldap_set_option (st->ld, LDAP_OPT_X_TLS_CACERTFILE, st->cacert);
 105
 106         if (st->verifyhost == 0)
 107         {
 108                 int never = LDAP_OPT_X_TLS_NEVER;
 109                 ldap_set_option (st->ld, LDAP_OPT_X_TLS_REQUIRE_CERT, &never);
 110         }
 111
 112         if (st->starttls != 0)
 113         {
 114                 rc = ldap_start_tls_s (ld, NULL, NULL);
 115                 if (rc != LDAP_SUCCESS)
 116                 {
 117                         ERROR ("openldap plugin: Failed to start tls on %s: %s",
 118                                         st->url, ldap_err2string (rc));
 119                         st->state = 0;
 120                         ldap_unbind_ext_s (st->ld, NULL, NULL);
 121                         return (-1);
 122                 }
 123         }
 124
 125         struct berval cred;
 126         if (st->password != NULL)
 127         {
 128                 cred.bv_val = st->password;
 129                 cred.bv_len = strlen (st->password);
 130         }
 131         else
 132         {
 133                 cred.bv_val = "";
 134                 cred.bv_len = 0;
 135         }
 136
 137         rc = ldap_sasl_bind_s (st->ld, st->binddn, LDAP_SASL_SIMPLE, &cred,
 138                         NULL, NULL, NULL);
 139         if (rc != LDAP_SUCCESS)
 140         {
 141                 ERROR ("openldap plugin: Failed to bind to %s: %s",
 142                                 st->url, ldap_err2string (rc));
 143                 st->state = 0;
 144                 ldap_unbind_ext_s (st->ld, NULL, NULL);
 145                 return (-1);
 146         }
 147         else
 148         {
 149                 DEBUG ("openldap plugin: Successfully connected to %s",
 150                                 st->url);
 151                 st->state = 1;
 152                 return (0);
 153         }
 154 } /* }}} static cldap_init_host */
 155
 156 static void cldap_submit_value (const char *type, const char *type_instance, /* {{{ */
 157                 value_t value, cldap_t *st)
 158 {
 159         value_list_t vl = VALUE_LIST_INIT;
 160
 161         vl.values     = &value;
 162         vl.values_len = 1;
 163
 164         if ((st->host == NULL)
 165                         || (strcmp ("", st->host) == 0)
 166                         || (strcmp ("localhost", st->host) == 0))
 167         {
 168                 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 169         }
 170         else
 171         {
 172                 sstrncpy (vl.host, st->host, sizeof (vl.host));
 173         }
 174
 175         sstrncpy (vl.plugin, "openldap", sizeof (vl.plugin));
 176         if (st->name != NULL)
 177                 sstrncpy (vl.plugin_instance, st->name,
 178                                 sizeof (vl.plugin_instance));
 179
 180         sstrncpy (vl.type, type, sizeof (vl.type));
 181         if (type_instance != NULL)
 182                 sstrncpy (vl.type_instance, type_instance,
 183                                 sizeof (vl.type_instance));
 184
 185         plugin_dispatch_values (&vl);
 186 } /* }}} void cldap_submit_value */
 187
 188 static void cldap_submit_derive (const char *type, const char *type_instance, /* {{{ */
 189                 derive_t d, cldap_t *st)
 190 {
 191         value_t v;
 192         v.derive = d;
 193         cldap_submit_value (type, type_instance, v, st);
 194 } /* }}} void cldap_submit_derive */
 195
 196 static void cldap_submit_gauge (const char *type, const char *type_instance, /* {{{ */
 197                 gauge_t g, cldap_t *st)
 198 {
 199         value_t v;
 200         v.gauge = g;
 201         cldap_submit_value (type, type_instance, v, st);
 202 } /* }}} void cldap_submit_gauge */
 203
 204 static int cldap_read_host (user_data_t *ud) /* {{{ */
 205 {
 206         cldap_t *st;
 207         LDAPMessage *e, *result;
 208         char *dn;
 209         int rc;
 210         int status;
 211
 212         char *attrs[9] = { "monitorCounter",
 213                                 "monitorOpCompleted",
 214                                 "monitorOpInitiated",
 215                                 "monitoredInfo",
 216                                 "olmBDBEntryCache",
 217                                 "olmBDBDNCache",
 218                                 "olmBDBIDLCache",
 219                                 "namingContexts",
 220                                 NULL };
 221
 222         if ((ud == NULL) || (ud->data == NULL))
 223         {
 224                 ERROR ("openldap plugin: cldap_read_host: Invalid user data.");
 225                 return (-1);
 226         }
 227
 228         st = (cldap_t *) ud->data;
 229
 230         status = cldap_init_host (st);
 231         if (status != 0)
 232                 return (-1);
 233
 234         rc = ldap_search_ext_s (st->ld, "cn=Monitor", LDAP_SCOPE_SUBTREE,
 235                 "(|(!(cn=* *))(cn=Database*))", attrs, 0,
 236                 NULL, NULL, NULL, 0, &result);
 237
 238         if (rc != LDAP_SUCCESS)
 239         {
 240                 ERROR ("openldap plugin: Failed to execute search: %s",
 241                                 ldap_err2string (rc));
 242                 ldap_msgfree (result);
 243                 st->state = 0;
 244                 ldap_unbind_ext_s (st->ld, NULL, NULL);
 245                 return (-1);
 246         }
 247
 248         for (e = ldap_first_entry (st->ld, result); e != NULL;
 249                 e = ldap_next_entry (st->ld, e))
 250         {
 251                 if ((dn = ldap_get_dn (st->ld, e)) != NULL)
 252                 {
 253                         unsigned long long counter = 0;
 254                         unsigned long long opc = 0;
 255                         unsigned long long opi = 0;
 256                         unsigned long long info = 0;
 257
 258                         struct berval counter_data;
 259                         struct berval opc_data;
 260                         struct berval opi_data;
 261                         struct berval info_data;
 262                         struct berval olmbdb_data;
 263                         struct berval nc_data;
 264
 265                         struct berval **counter_list;
 266                         struct berval **opc_list;
 267                         struct berval **opi_list;
 268                         struct berval **info_list;
 269                         struct berval **olmbdb_list;
 270                         struct berval **nc_list;
 271
 272                         if ((counter_list = ldap_get_values_len (st->ld, e,
 273                                 "monitorCounter")) != NULL)
 274                         {
 275                                 counter_data = *counter_list[0];
 276                                 counter = atoll (counter_data.bv_val);
 277                         }
 278
 279                         if ((opc_list = ldap_get_values_len (st->ld, e,
 280                                 "monitorOpCompleted")) != NULL)
 281                         {
 282                                 opc_data = *opc_list[0];
 283                                 opc = atoll (opc_data.bv_val);
 284                         }
 285
 286                         if ((opi_list = ldap_get_values_len (st->ld, e,
 287                                 "monitorOpInitiated")) != NULL)
 288                         {
 289                                 opi_data = *opi_list[0];
 290                                 opi = atoll (opi_data.bv_val);
 291                         }
 292
 293                         if ((info_list = ldap_get_values_len (st->ld, e,
 294                                 "monitoredInfo")) != NULL)
 295                         {
 296                                 info_data = *info_list[0];
 297                                 info = atoll (info_data.bv_val);
 298                         }
 299
 300                         if (strcmp (dn, "cn=Total,cn=Connections,cn=Monitor")
 301                                         == 0)
 302                         {
 303                                 cldap_submit_derive ("total_connections", NULL,
 304                                         counter, st);
 305                         }
 306                         else if (strcmp (dn,
 307                                         "cn=Current,cn=Connections,cn=Monitor")
 308                                         == 0)
 309                         {
 310                                 cldap_submit_gauge ("current_connections", NULL,
 311                                         counter, st);
 312                         }
 313                         else if (strcmp (dn,
 314                                         "cn=Operations,cn=Monitor") == 0)
 315                         {
 316                                 cldap_submit_derive ("operations",
 317                                         "completed", opc, st);
 318                                 cldap_submit_derive ("operations",
 319                                         "initiated", opi, st);
 320                         }
 321                         else if (strcmp (dn,
 322                                         "cn=Bind,cn=Operations,cn=Monitor")
 323                                         == 0)
 324                         {
 325                                 cldap_submit_derive ("operations",
 326                                         "bind-completed", opc, st);
 327                                 cldap_submit_derive ("operations",
 328                                         "bind-initiated", opi, st);
 329                         }
 330                         else if (strcmp (dn,
 331                                         "cn=UnBind,cn=Operations,cn=Monitor")
 332                                         == 0)
 333                         {
 334                                 cldap_submit_derive ("operations",
 335                                         "unbind-completed", opc, st);
 336                                 cldap_submit_derive ("operations",
 337                                         "unbind-initiated", opi, st);
 338                         }
 339                         else if (strcmp (dn,
 340                                         "cn=Search,cn=Operations,cn=Monitor")
 341                                         == 0)
 342                         {
 343                                 cldap_submit_derive ("operations",
 344                                         "search-completed", opc, st);
 345                                 cldap_submit_derive ("operations",
 346                                         "search-initiated", opi, st);
 347                         }
 348                         else if (strcmp (dn,
 349                                         "cn=Compare,cn=Operations,cn=Monitor")
 350                                         == 0)
 351                         {
 352                                 cldap_submit_derive ("operations",
 353                                         "compare-completed", opc, st);
 354                                 cldap_submit_derive ("operations",
 355                                         "compare-initiated", opi, st);
 356                         }
 357                         else if (strcmp (dn,
 358                                         "cn=Modify,cn=Operations,cn=Monitor")
 359                                         == 0)
 360                         {
 361                                 cldap_submit_derive ("operations",
 362                                         "modify-completed", opc, st);
 363                                 cldap_submit_derive ("operations",
 364                                         "modify-initiated", opi, st);
 365                         }
 366                         else if (strcmp (dn,
 367                                         "cn=Modrdn,cn=Operations,cn=Monitor")
 368                                         == 0)
 369                         {
 370                                 cldap_submit_derive ("operations",
 371                                         "modrdn-completed", opc, st);
 372                                 cldap_submit_derive ("operations",
 373                                         "modrdn-initiated", opi, st);
 374                         }
 375                         else if (strcmp (dn,
 376                                         "cn=Add,cn=Operations,cn=Monitor")
 377                                         == 0)
 378                         {
 379                                 cldap_submit_derive ("operations",
 380                                         "add-completed", opc, st);
 381                                 cldap_submit_derive ("operations",
 382                                         "add-initiated", opi, st);
 383                         }
 384                         else if (strcmp (dn,
 385                                         "cn=Delete,cn=Operations,cn=Monitor")
 386                                         == 0)
 387                         {
 388                                 cldap_submit_derive ("operations",
 389                                         "delete-completed", opc, st);
 390                                 cldap_submit_derive ("operations",
 391                                         "delete-initiated", opi, st);
 392                         }
 393                         else if (strcmp (dn,
 394                                         "cn=Abandon,cn=Operations,cn=Monitor")
 395                                         == 0)
 396                         {
 397                                 cldap_submit_derive ("operations",
 398                                         "abandon-completed", opc, st);
 399                                 cldap_submit_derive ("operations",
 400                                         "abandon-initiated", opi, st);
 401                         }
 402                         else if (strcmp (dn,
 403                                         "cn=Extended,cn=Operations,cn=Monitor")
 404                                         == 0)
 405                         {
 406                                 cldap_submit_derive ("operations",
 407                                         "extended-completed", opc, st);
 408                                 cldap_submit_derive ("operations",
 409                                         "extended-initiated", opi, st);
 410                         }
 411                         else if ((strncmp (dn, "cn=Database", 11) == 0)
 412                                 && ((nc_list = ldap_get_values_len
 413                                                 (st->ld, e, "namingContexts")) != NULL))
 414                         {
 415                                 nc_data = *nc_list[0];
 416                                 char typeinst[DATA_MAX_NAME_LEN];
 417
 418                                 if ((olmbdb_list = ldap_get_values_len (st->ld, e,
 419                                         "olmBDBEntryCache")) != NULL)
 420                                 {
 421                                         olmbdb_data = *olmbdb_list[0];
 422                                         ssnprintf (typeinst, sizeof (typeinst),
 423                                                 "bdbentrycache-%s", nc_data.bv_val);
 424                                         cldap_submit_gauge ("cache_size", typeinst,
 425                                                 atoll (olmbdb_data.bv_val), st);
 426                                         ldap_value_free_len (olmbdb_list);
 427                                 }
 428
 429                                 if ((olmbdb_list = ldap_get_values_len (st->ld, e,
 430                                         "olmBDBDNCache")) != NULL)
 431                                 {
 432                                         olmbdb_data = *olmbdb_list[0];
 433                                         ssnprintf (typeinst, sizeof (typeinst),
 434                                                 "bdbdncache-%s", nc_data.bv_val);
 435                                         cldap_submit_gauge ("cache_size", typeinst,
 436                                                 atoll (olmbdb_data.bv_val), st);
 437                                         ldap_value_free_len (olmbdb_list);
 438                                 }
 439
 440                                 if ((olmbdb_list = ldap_get_values_len (st->ld, e,
 441                                         "olmBDBIDLCache")) != NULL)
 442                                 {
 443                                         olmbdb_data = *olmbdb_list[0];
 444                                         ssnprintf (typeinst, sizeof (typeinst),
 445                                                 "bdbidlcache-%s", nc_data.bv_val);
 446                                         cldap_submit_gauge ("cache_size", typeinst,
 447                                                 atoll (olmbdb_data.bv_val), st);
 448                                         ldap_value_free_len (olmbdb_list);
 449                                 }
 450
 451                                 ldap_value_free_len (nc_list);
 452                         }
 453                         else if (strcmp (dn,
 454                                         "cn=Bytes,cn=Statistics,cn=Monitor")
 455                                         == 0)
 456                         {
 457                                 cldap_submit_derive ("derive", "statistics-bytes",
 458                                         counter, st);
 459                         }
 460                         else if (strcmp (dn,
 461                                         "cn=PDU,cn=Statistics,cn=Monitor")
 462                                         == 0)
 463                         {
 464                                 cldap_submit_derive ("derive", "statistics-pdu",
 465                                         counter, st);
 466                         }
 467                         else if (strcmp (dn,
 468                                         "cn=Entries,cn=Statistics,cn=Monitor")
 469                                         == 0)
 470                         {
 471                                 cldap_submit_derive ("derive", "statistics-entries",
 472                                         counter, st);
 473                         }
 474                         else if (strcmp (dn,
 475                                         "cn=Referrals,cn=Statistics,cn=Monitor")
 476                                         == 0)
 477                         {
 478                                 cldap_submit_derive ("derive", "statistics-referrals",
 479                                         counter, st);
 480                         }
 481                         else if (strcmp (dn,
 482                                         "cn=Open,cn=Threads,cn=Monitor")
 483                                         == 0)
 484                         {
 485                                 cldap_submit_gauge ("threads", "threads-open",
 486                                         info, st);
 487                         }
 488                         else if (strcmp (dn,
 489                                         "cn=Starting,cn=Threads,cn=Monitor")
 490                                         == 0)
 491                         {
 492                                 cldap_submit_gauge ("threads", "threads-starting",
 493                                         info, st);
 494                         }
 495                         else if (strcmp (dn,
 496                                         "cn=Active,cn=Threads,cn=Monitor")
 497                                         == 0)
 498                         {
 499                                 cldap_submit_gauge ("threads", "threads-active",
 500                                         info, st);
 501                         }
 502                         else if (strcmp (dn,
 503                                         "cn=Pending,cn=Threads,cn=Monitor")
 504                                         == 0)
 505                         {
 506                                 cldap_submit_gauge ("threads", "threads-pending",
 507                                         info, st);
 508                         }
 509                         else if (strcmp (dn,
 510                                         "cn=Backload,cn=Threads,cn=Monitor")
 511                                         == 0)
 512                         {
 513                                 cldap_submit_gauge ("threads", "threads-backload",
 514                                         info, st);
 515                         }
 516                         else if (strcmp (dn,
 517                                         "cn=Read,cn=Waiters,cn=Monitor")
 518                                         == 0)
 519                         {
 520                                 cldap_submit_derive ("derive", "waiters-read",
 521                                         counter, st);
 522                         }
 523                         else if (strcmp (dn,
 524                                         "cn=Write,cn=Waiters,cn=Monitor")
 525                                         == 0)
 526                         {
 527                                 cldap_submit_derive ("derive", "waiters-write",
 528                                         counter, st);
 529                         }
 530
 531                         ldap_value_free_len (counter_list);
 532                         ldap_value_free_len (opc_list);
 533                         ldap_value_free_len (opi_list);
 534                         ldap_value_free_len (info_list);
 535                 }
 536
 537                 ldap_memfree (dn);
 538         }
 539
 540         ldap_msgfree (result);
 541         return (0);
 542 } /* }}} int cldap_read_host */
 543
 544 /* Configuration handling functions {{{
 545  *
 546  * <Plugin ldap>
 547  *   <Instance "plugin_instance1">
 548  *     URL "ldap://localhost"
 549  *     ...
 550  *   </Instance>
 551  * </Plugin>
 552  */
 553
 554 static int cldap_config_add (oconfig_item_t *ci) /* {{{ */
 555 {
 556         cldap_t *st;
 557         int i;
 558         int status;
 559
 560         st = malloc (sizeof (*st));
 561         if (st == NULL)
 562         {
 563                 ERROR ("openldap plugin: malloc failed.");
 564                 return (-1);
 565         }
 566         memset (st, 0, sizeof (*st));
 567
 568         status = cf_util_get_string (ci, &st->name);
 569         if (status != 0)
 570         {
 571                 sfree (st);
 572                 return (status);
 573         }
 574
 575         st->starttls = 0;
 576         st->timeout = (long) (CDTIME_T_TO_MS(plugin_get_interval()) / 1000);
 577         st->verifyhost = 1;
 578         st->version = LDAP_VERSION3;
 579
 580         for (i = 0; i < ci->children_num; i++)
 581         {
 582                 oconfig_item_t *child = ci->children + i;
 583
 584                 if (strcasecmp ("BindDN", child->key) == 0)
 585                         status = cf_util_get_string (child, &st->binddn);
 586                 else if (strcasecmp ("Password", child->key) == 0)
 587                         status = cf_util_get_string (child, &st->password);
 588                 else if (strcasecmp ("CACert", child->key) == 0)
 589                         status = cf_util_get_string (child, &st->cacert);
 590                 else if (strcasecmp ("StartTLS", child->key) == 0)
 591                         status = cf_util_get_boolean (child, &st->starttls);
 592                 else if (strcasecmp ("Timeout", child->key) == 0)
 593                         status = cf_util_get_int (child, &st->timeout);
 594                 else if (strcasecmp ("URL", child->key) == 0)
 595                         status = cf_util_get_string (child, &st->url);
 596                 else if (strcasecmp ("VerifyHost", child->key) == 0)
 597                         status = cf_util_get_boolean (child, &st->verifyhost);
 598                 else if (strcasecmp ("Version", child->key) == 0)
 599                         status = cf_util_get_int (child, &st->version);
 600                 else
 601                 {
 602                         WARNING ("openldap plugin: Option `%s' not allowed here.",
 603                                         child->key);
 604                         status = -1;
 605                 }
 606
 607                 if (status != 0)
 608                         break;
 609         }
 610
 611         /* Check if struct is complete.. */
 612         if ((status == 0) && (st->url == NULL))
 613         {
 614                 ERROR ("openldap plugin: Instance `%s': "
 615                                 "No URL has been configured.",
 616                                 st->name);
 617                 status = -1;
 618         }
 619
 620         /* Check if URL is valid */
 621         if ((status == 0) && (st->url != NULL))
 622         {
 623                 LDAPURLDesc *ludpp;
 624                 int rc;
 625
 626                 if ((rc = ldap_url_parse (st->url, &ludpp)) != 0)
 627                 {
 628                         ERROR ("openldap plugin: Instance `%s': "
 629                                 "Invalid URL: `%s'",
 630                                 st->name, st->url);
 631                         status = -1;
 632                 }
 633
 634                 if ((status == 0) && (ludpp->lud_host != NULL))
 635                 {
 636                         st->host = strdup (ludpp->lud_host);
 637                 }
 638
 639                 ldap_free_urldesc (ludpp);
 640         }
 641
 642         if (status == 0)
 643         {
 644                 user_data_t ud;
 645                 char callback_name[3*DATA_MAX_NAME_LEN];
 646
 647                 memset (&ud, 0, sizeof (ud));
 648                 ud.data = st;
 649
 650                 memset (callback_name, 0, sizeof (callback_name));
 651                 ssnprintf (callback_name, sizeof (callback_name),
 652                                 "openldap/%s/%s",
 653                                 (st->host != NULL) ? st->host : hostname_g,
 654                                 (st->name != NULL) ? st->name : "default"),
 655
 656                 status = plugin_register_complex_read (/* group = */ NULL,
 657                                 /* name      = */ callback_name,
 658                                 /* callback  = */ cldap_read_host,
 659                                 /* interval  = */ 0,
 660                                 /* user_data = */ &ud);
 661         }
 662
 663         if (status != 0)
 664         {
 665                 cldap_free (st);
 666                 return (-1);
 667         }
 668
 669         return (0);
 670 } /* }}} int cldap_config_add */
 671
 672 static int cldap_config (oconfig_item_t *ci) /* {{{ */
 673 {
 674         int i;
 675         int status = 0;
 676
 677         for (i = 0; i < ci->children_num; i++)
 678         {
 679                 oconfig_item_t *child = ci->children + i;
 680
 681                 if (strcasecmp ("Instance", child->key) == 0)
 682                         cldap_config_add (child);
 683                 else
 684                         WARNING ("openldap plugin: The configuration option "
 685                                         "\"%s\" is not allowed here. Did you "
 686                                         "forget to add an <Instance /> block "
 687                                         "around the configuration?",
 688                                         child->key);
 689         } /* for (ci->children) */
 690
 691         return (status);
 692 } /* }}} int cldap_config */
 693
 694 /* }}} End of configuration handling functions */
 695
 696 static int cldap_init (void) /* {{{ */
 697 {
 698         /* Initialize LDAP library while still single-threaded as recommended in
 699          * ldap_initialize(3) */
 700         int debug_level;
 701         ldap_get_option (NULL, LDAP_OPT_DEBUG_LEVEL, &debug_level);
 702         return (0);
 703 } /* }}} int cldap_init */
 704
 705 void module_register (void) /* {{{ */
 706 {
 707         plugin_register_complex_config ("openldap", cldap_config);
 708         plugin_register_init ("openldap", cldap_init);
 709 } /* }}} void module_register */