src/openldap.c

   1 /**
   2  * collectd - src/openldap.c
   3  * Copyright (C) 2011       Kimo Rosenbaum
   4  * Copyright (C) 2014-2015  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
  31 #include "common.h"
  32 #include "plugin.h"
  33
  34 #if defined(__APPLE__)
  35 #pragma clang diagnostic push
  36 #pragma clang diagnostic warning "-Wdeprecated-declarations"
  37 #endif
  38
  39 #include <lber.h>
  40 #include <ldap.h>
  41
  42 struct cldap_s /* {{{ */
  43 {
  44         char *name;
  45
  46         char *binddn;
  47         char *password;
  48         char *cacert;
  49         char *host;
  50         int   state;
  51         _Bool starttls;
  52         int   timeout;
  53         char *url;
  54         _Bool verifyhost;
  55         int   version;
  56
  57         LDAP *ld;
  58 };
  59 typedef struct cldap_s cldap_t; /* }}} */
  60
  61 static cldap_t **databases   = NULL;
  62 static size_t  databases_num = 0;
  63
  64 static void cldap_free (cldap_t *st) /* {{{ */
  65 {
  66         if (st == NULL)
  67                 return;
  68
  69         sfree (st->binddn);
  70         sfree (st->password);
  71         sfree (st->cacert);
  72         sfree (st->host);
  73         sfree (st->name);
  74         sfree (st->url);
  75         if (st->ld)
  76                 ldap_memfree (st->ld);
  77         sfree (st);
  78 } /* }}} void cldap_free */
  79
  80 /* initialize ldap for each host */
  81 static int cldap_init_host (cldap_t *st) /* {{{ */
  82 {
  83         LDAP *ld;
  84         int rc;
  85
  86         if (st->state && st->ld)
  87         {
  88                 DEBUG ("openldap plugin: Already connected to %s", st->url);
  89                 return (0);
  90         }
  91
  92         rc = ldap_initialize (&ld, st->url);
  93         if (rc != LDAP_SUCCESS)
  94         {
  95                 ERROR ("openldap plugin: ldap_initialize failed: %s",
  96                         ldap_err2string (rc));
  97                 st->state = 0;
  98                 ldap_unbind_ext_s (ld, NULL, NULL);
  99                 return (-1);
 100         }
 101
 102         st->ld = ld;
 103
 104         ldap_set_option (st->ld, LDAP_OPT_PROTOCOL_VERSION, &st->version);
 105
 106         ldap_set_option (st->ld, LDAP_OPT_TIMEOUT,
 107                 &(const struct timeval){st->timeout, 0});
 108
 109         ldap_set_option (st->ld, LDAP_OPT_RESTART, LDAP_OPT_ON);
 110
 111         if (st->cacert != NULL)
 112                 ldap_set_option (st->ld, LDAP_OPT_X_TLS_CACERTFILE, st->cacert);
 113
 114         if (st->verifyhost == 0)
 115         {
 116                 int never = LDAP_OPT_X_TLS_NEVER;
 117                 ldap_set_option (st->ld, LDAP_OPT_X_TLS_REQUIRE_CERT, &never);
 118         }
 119
 120         if (st->starttls != 0)
 121         {
 122                 rc = ldap_start_tls_s (ld, NULL, NULL);
 123                 if (rc != LDAP_SUCCESS)
 124                 {
 125                         ERROR ("openldap plugin: Failed to start tls on %s: %s",
 126                                         st->url, ldap_err2string (rc));
 127                         st->state = 0;
 128                         ldap_unbind_ext_s (st->ld, NULL, NULL);
 129                         return (-1);
 130                 }
 131         }
 132
 133         struct berval cred;
 134         if (st->password != NULL)
 135         {
 136                 cred.bv_val = st->password;
 137                 cred.bv_len = strlen (st->password);
 138         }
 139         else
 140         {
 141                 cred.bv_val = "";
 142                 cred.bv_len = 0;
 143         }
 144
 145         rc = ldap_sasl_bind_s (st->ld, st->binddn, LDAP_SASL_SIMPLE, &cred,
 146                         NULL, NULL, NULL);
 147         if (rc != LDAP_SUCCESS)
 148         {
 149                 ERROR ("openldap plugin: Failed to bind to %s: %s",
 150                                 st->url, ldap_err2string (rc));
 151                 st->state = 0;
 152                 ldap_unbind_ext_s (st->ld, NULL, NULL);
 153                 return (-1);
 154         }
 155         else
 156         {
 157                 DEBUG ("openldap plugin: Successfully connected to %s",
 158                                 st->url);
 159                 st->state = 1;
 160                 return (0);
 161         }
 162 } /* }}} static cldap_init_host */
 163
 164 static void cldap_submit_value (const char *type, const char *type_instance, /* {{{ */
 165                 value_t value, cldap_t *st)
 166 {
 167         value_list_t vl = VALUE_LIST_INIT;
 168
 169         vl.values     = &value;
 170         vl.values_len = 1;
 171
 172         if ((st->host == NULL)
 173                         || (strcmp ("", st->host) == 0)
 174                         || (strcmp ("localhost", st->host) == 0))
 175                 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 176         else
 177                 sstrncpy (vl.host, st->host, sizeof (vl.host));
 178
 179         sstrncpy (vl.plugin, "openldap", sizeof (vl.plugin));
 180         if (st->name != NULL)
 181                 sstrncpy (vl.plugin_instance, st->name,
 182                                 sizeof (vl.plugin_instance));
 183
 184         sstrncpy (vl.type, type, sizeof (vl.type));
 185         if (type_instance != NULL)
 186                 sstrncpy (vl.type_instance, type_instance,
 187                                 sizeof (vl.type_instance));
 188
 189         plugin_dispatch_values (&vl);
 190 } /* }}} void cldap_submit_value */
 191
 192 static void cldap_submit_derive (const char *type, const char *type_instance, /* {{{ */
 193                 derive_t d, cldap_t *st)
 194 {
 195         cldap_submit_value (type, type_instance, (value_t) { .derive = d }, st);
 196 } /* }}} void cldap_submit_derive */
 197
 198 static void cldap_submit_gauge (const char *type, const char *type_instance, /* {{{ */
 199                 gauge_t g, cldap_t *st)
 200 {
 201         cldap_submit_value (type, type_instance, (value_t) { .gauge = g }, st);
 202 } /* }}} void cldap_submit_gauge */
 203
 204 static int cldap_read_host (user_data_t *ud) /* {{{ */
 205 {
 206         cldap_t *st;
 207         LDAPMessage *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 (LDAPMessage *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 status;
 558
 559         st = calloc (1, sizeof (*st));
 560         if (st == NULL)
 561         {
 562                 ERROR ("openldap plugin: calloc failed.");
 563                 return (-1);
 564         }
 565
 566         status = cf_util_get_string (ci, &st->name);
 567         if (status != 0)
 568         {
 569                 sfree (st);
 570                 return (status);
 571         }
 572
 573         st->starttls = 0;
 574         st->timeout = (long) (CDTIME_T_TO_MS(plugin_get_interval()) / 1000);
 575         st->verifyhost = 1;
 576         st->version = LDAP_VERSION3;
 577
 578         for (int i = 0; i < ci->children_num; i++)
 579         {
 580                 oconfig_item_t *child = ci->children + i;
 581
 582                 if (strcasecmp ("BindDN", child->key) == 0)
 583                         status = cf_util_get_string (child, &st->binddn);
 584                 else if (strcasecmp ("Password", child->key) == 0)
 585                         status = cf_util_get_string (child, &st->password);
 586                 else if (strcasecmp ("CACert", child->key) == 0)
 587                         status = cf_util_get_string (child, &st->cacert);
 588                 else if (strcasecmp ("StartTLS", child->key) == 0)
 589                         status = cf_util_get_boolean (child, &st->starttls);
 590                 else if (strcasecmp ("Timeout", child->key) == 0)
 591                         status = cf_util_get_int (child, &st->timeout);
 592                 else if (strcasecmp ("URL", child->key) == 0)
 593                         status = cf_util_get_string (child, &st->url);
 594                 else if (strcasecmp ("VerifyHost", child->key) == 0)
 595                         status = cf_util_get_boolean (child, &st->verifyhost);
 596                 else if (strcasecmp ("Version", child->key) == 0)
 597                         status = cf_util_get_int (child, &st->version);
 598                 else
 599                 {
 600                         WARNING ("openldap plugin: Option `%s' not allowed here.",
 601                                         child->key);
 602                         status = -1;
 603                 }
 604
 605                 if (status != 0)
 606                         break;
 607         }
 608
 609         /* Check if struct is complete.. */
 610         if ((status == 0) && (st->url == NULL))
 611         {
 612                 ERROR ("openldap plugin: Instance `%s': "
 613                                 "No URL has been configured.",
 614                                 st->name);
 615                 status = -1;
 616         }
 617
 618         /* Check if URL is valid */
 619         if ((status == 0) && (st->url != NULL))
 620         {
 621                 LDAPURLDesc *ludpp;
 622
 623                 if (ldap_url_parse (st->url, &ludpp) != 0)
 624                 {
 625                         ERROR ("openldap plugin: Instance `%s': "
 626                                 "Invalid URL: `%s'",
 627                                 st->name, st->url);
 628                         status = -1;
 629                 }
 630
 631                 if ((status == 0) && (ludpp->lud_host != NULL))
 632                         st->host = strdup (ludpp->lud_host);
 633
 634                 ldap_free_urldesc (ludpp);
 635         }
 636
 637         if (status == 0)
 638         {
 639                 cldap_t **temp;
 640
 641                 temp = (cldap_t **) realloc (databases,
 642                         sizeof (*databases) * (databases_num + 1));
 643
 644                 if (temp == NULL)
 645                 {
 646                         ERROR ("openldap plugin: realloc failed");
 647                         status = -1;
 648                 }
 649                 else
 650                 {
 651                         char callback_name[3*DATA_MAX_NAME_LEN] = { 0 };
 652
 653                         databases = temp;
 654                         databases[databases_num] = st;
 655                         databases_num++;
 656
 657                         ssnprintf (callback_name, sizeof (callback_name),
 658                                         "openldap/%s/%s",
 659                                         (st->host != NULL) ? st->host : hostname_g,
 660                                         (st->name != NULL) ? st->name : "default");
 661
 662                         status = plugin_register_complex_read (/* group = */ NULL,
 663                                         /* name      = */ callback_name,
 664                                         /* callback  = */ cldap_read_host,
 665                                         /* interval  = */ 0,
 666                                         &(user_data_t) {
 667                                                 .data = st,
 668                                         });
 669                 }
 670         }
 671
 672         if (status != 0)
 673         {
 674                 cldap_free (st);
 675                 return (-1);
 676         }
 677
 678         return (0);
 679 } /* }}} int cldap_config_add */
 680
 681 static int cldap_config (oconfig_item_t *ci) /* {{{ */
 682 {
 683         int status = 0;
 684
 685         for (int i = 0; i < ci->children_num; i++)
 686         {
 687                 oconfig_item_t *child = ci->children + i;
 688
 689                 if (strcasecmp ("Instance", child->key) == 0)
 690                         cldap_config_add (child);
 691                 else
 692                         WARNING ("openldap plugin: The configuration option "
 693                                         "\"%s\" is not allowed here. Did you "
 694                                         "forget to add an <Instance /> block "
 695                                         "around the configuration?",
 696                                         child->key);
 697         } /* for (ci->children) */
 698
 699         return (status);
 700 } /* }}} int cldap_config */
 701
 702 /* }}} End of configuration handling functions */
 703
 704 static int cldap_init (void) /* {{{ */
 705 {
 706         /* Initialize LDAP library while still single-threaded as recommended in
 707          * ldap_initialize(3) */
 708         int debug_level;
 709         ldap_get_option (NULL, LDAP_OPT_DEBUG_LEVEL, &debug_level);
 710         return (0);
 711 } /* }}} int cldap_init */
 712
 713 static int cldap_shutdown (void) /* {{{ */
 714 {
 715         for (size_t i = 0; i < databases_num; i++)
 716                 if (databases[i]->ld != NULL)
 717                         ldap_unbind_ext_s (databases[i]->ld, NULL, NULL);
 718         sfree (databases);
 719         databases_num = 0;
 720
 721         return (0);
 722 } /* }}} int cldap_shutdown */
 723
 724 void module_register (void) /* {{{ */
 725 {
 726         plugin_register_complex_config ("openldap", cldap_config);
 727         plugin_register_init ("openldap", cldap_init);
 728         plugin_register_shutdown ("openldap", cldap_shutdown);
 729 } /* }}} void module_register */
 730
 731 #if defined(__APPLE__)
 732 #pragma clang diagnostic pop
 733 #endif