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 **/
29 #include "collectd.h"
31 #include "common.h"
32 #include "plugin.h"
34 #if defined(__APPLE__)
35 #pragma clang diagnostic push
36 #pragma clang diagnostic warning "-Wdeprecated-declarations"
37 #endif
39 #include <lber.h>
40 #include <ldap.h>
42 struct cldap_s /* {{{ */
43 {
44 char *name;
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;
57 LDAP *ld;
58 };
59 typedef struct cldap_s cldap_t; /* }}} */
61 static cldap_t **databases = NULL;
62 static size_t databases_num = 0;
64 static void cldap_free(cldap_t *st) /* {{{ */
65 {
66 if (st == NULL)
67 return;
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 */
80 /* initialize ldap for each host */
81 static int cldap_init_host(cldap_t *st) /* {{{ */
82 {
83 LDAP *ld;
84 int rc;
86 if (st->state && st->ld) {
87 DEBUG("openldap plugin: Already connected to %s", st->url);
88 return 0;
89 }
91 rc = ldap_initialize(&ld, st->url);
92 if (rc != LDAP_SUCCESS) {
93 ERROR("openldap plugin: ldap_initialize failed: %s", ldap_err2string(rc));
94 st->state = 0;
95 if (ld != NULL)
96 ldap_unbind_ext_s(ld, NULL, NULL);
97 return (-1);
98 }
100 st->ld = ld;
102 ldap_set_option(st->ld, LDAP_OPT_PROTOCOL_VERSION, &st->version);
104 ldap_set_option(st->ld, LDAP_OPT_TIMEOUT,
105 &(const struct timeval){st->timeout, 0});
107 ldap_set_option(st->ld, LDAP_OPT_RESTART, LDAP_OPT_ON);
109 if (st->cacert != NULL)
110 ldap_set_option(st->ld, LDAP_OPT_X_TLS_CACERTFILE, st->cacert);
112 if (st->verifyhost == 0) {
113 int never = LDAP_OPT_X_TLS_NEVER;
114 ldap_set_option(st->ld, LDAP_OPT_X_TLS_REQUIRE_CERT, &never);
115 }
117 if (st->starttls != 0) {
118 rc = ldap_start_tls_s(ld, NULL, NULL);
119 if (rc != LDAP_SUCCESS) {
120 ERROR("openldap plugin: Failed to start tls on %s: %s", st->url,
121 ldap_err2string(rc));
122 st->state = 0;
123 <<<<<<< HEAD
124 ldap_unbind_ext_s(st->ld, NULL, NULL);
125 return -1;
126 =======
127 if (st->ld != NULL)
128 ldap_unbind_ext_s(st->ld, NULL, NULL);
129 return (-1);
130 >>>>>>> collectd-5.7
131 }
132 }
134 struct berval cred;
135 if (st->password != NULL) {
136 cred.bv_val = st->password;
137 cred.bv_len = strlen(st->password);
138 } else {
139 cred.bv_val = "";
140 cred.bv_len = 0;
141 }
143 rc = ldap_sasl_bind_s(st->ld, st->binddn, LDAP_SASL_SIMPLE, &cred, NULL, NULL,
144 NULL);
145 if (rc != LDAP_SUCCESS) {
146 ERROR("openldap plugin: Failed to bind to %s: %s", st->url,
147 ldap_err2string(rc));
148 st->state = 0;
149 <<<<<<< HEAD
150 ldap_unbind_ext_s(st->ld, NULL, NULL);
151 return -1;
152 =======
153 if (st->ld != NULL)
154 ldap_unbind_ext_s(st->ld, NULL, NULL);
155 return (-1);
156 >>>>>>> collectd-5.7
157 } else {
158 DEBUG("openldap plugin: Successfully connected to %s", st->url);
159 st->state = 1;
160 return 0;
161 }
162 } /* }}} static cldap_init_host */
164 static void cldap_submit_value(const char *type,
165 const char *type_instance, /* {{{ */
166 value_t value, cldap_t *st) {
167 value_list_t vl = VALUE_LIST_INIT;
169 vl.values = &value;
170 vl.values_len = 1;
172 if ((st->host != NULL) && (strcmp("localhost", st->host) != 0))
173 sstrncpy(vl.host, st->host, sizeof(vl.host));
175 sstrncpy(vl.plugin, "openldap", sizeof(vl.plugin));
176 if (st->name != NULL)
177 sstrncpy(vl.plugin_instance, st->name, sizeof(vl.plugin_instance));
179 sstrncpy(vl.type, type, sizeof(vl.type));
180 if (type_instance != NULL)
181 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
183 plugin_dispatch_values(&vl);
184 } /* }}} void cldap_submit_value */
186 static void cldap_submit_derive(const char *type,
187 const char *type_instance, /* {{{ */
188 derive_t d, cldap_t *st) {
189 cldap_submit_value(type, type_instance, (value_t){.derive = d}, st);
190 } /* }}} void cldap_submit_derive */
192 static void cldap_submit_gauge(const char *type,
193 const char *type_instance, /* {{{ */
194 gauge_t g, cldap_t *st) {
195 cldap_submit_value(type, type_instance, (value_t){.gauge = g}, st);
196 } /* }}} void cldap_submit_gauge */
198 static int cldap_read_host(user_data_t *ud) /* {{{ */
199 {
200 cldap_t *st;
201 LDAPMessage *result;
202 char *dn;
203 int rc;
204 int status;
206 char *attrs[9] = {
207 "monitorCounter", "monitorOpCompleted", "monitorOpInitiated",
208 "monitoredInfo", "olmBDBEntryCache", "olmBDBDNCache",
209 "olmBDBIDLCache", "namingContexts", NULL};
211 if ((ud == NULL) || (ud->data == NULL)) {
212 ERROR("openldap plugin: cldap_read_host: Invalid user data.");
213 return -1;
214 }
216 st = (cldap_t *)ud->data;
218 status = cldap_init_host(st);
219 if (status != 0)
220 return -1;
222 rc = ldap_search_ext_s(st->ld, "cn=Monitor", LDAP_SCOPE_SUBTREE,
223 "(|(!(cn=* *))(cn=Database*))", attrs, 0, NULL, NULL,
224 NULL, 0, &result);
226 if (rc != LDAP_SUCCESS) {
227 ERROR("openldap plugin: Failed to execute search: %s", ldap_err2string(rc));
228 ldap_msgfree(result);
229 st->state = 0;
230 <<<<<<< HEAD
231 ldap_unbind_ext_s(st->ld, NULL, NULL);
232 return -1;
233 =======
234 if (st->ld != NULL)
235 ldap_unbind_ext_s(st->ld, NULL, NULL);
236 return (-1);
237 >>>>>>> collectd-5.7
238 }
240 for (LDAPMessage *e = ldap_first_entry(st->ld, result); e != NULL;
241 e = ldap_next_entry(st->ld, e)) {
242 if ((dn = ldap_get_dn(st->ld, e)) != NULL) {
243 unsigned long long counter = 0;
244 unsigned long long opc = 0;
245 unsigned long long opi = 0;
246 unsigned long long info = 0;
248 struct berval counter_data;
249 struct berval opc_data;
250 struct berval opi_data;
251 struct berval info_data;
252 struct berval olmbdb_data;
253 struct berval nc_data;
255 struct berval **counter_list;
256 struct berval **opc_list;
257 struct berval **opi_list;
258 struct berval **info_list;
259 struct berval **olmbdb_list;
260 struct berval **nc_list;
262 if ((counter_list = ldap_get_values_len(st->ld, e, "monitorCounter")) !=
263 NULL) {
264 counter_data = *counter_list[0];
265 counter = atoll(counter_data.bv_val);
266 }
268 if ((opc_list = ldap_get_values_len(st->ld, e, "monitorOpCompleted")) !=
269 NULL) {
270 opc_data = *opc_list[0];
271 opc = atoll(opc_data.bv_val);
272 }
274 if ((opi_list = ldap_get_values_len(st->ld, e, "monitorOpInitiated")) !=
275 NULL) {
276 opi_data = *opi_list[0];
277 opi = atoll(opi_data.bv_val);
278 }
280 if ((info_list = ldap_get_values_len(st->ld, e, "monitoredInfo")) !=
281 NULL) {
282 info_data = *info_list[0];
283 info = atoll(info_data.bv_val);
284 }
286 if (strcmp(dn, "cn=Total,cn=Connections,cn=Monitor") == 0) {
287 cldap_submit_derive("total_connections", NULL, counter, st);
288 } else if (strcmp(dn, "cn=Current,cn=Connections,cn=Monitor") == 0) {
289 cldap_submit_gauge("current_connections", NULL, counter, st);
290 } else if (strcmp(dn, "cn=Operations,cn=Monitor") == 0) {
291 cldap_submit_derive("operations", "completed", opc, st);
292 cldap_submit_derive("operations", "initiated", opi, st);
293 } else if (strcmp(dn, "cn=Bind,cn=Operations,cn=Monitor") == 0) {
294 cldap_submit_derive("operations", "bind-completed", opc, st);
295 cldap_submit_derive("operations", "bind-initiated", opi, st);
296 } else if (strcmp(dn, "cn=UnBind,cn=Operations,cn=Monitor") == 0) {
297 cldap_submit_derive("operations", "unbind-completed", opc, st);
298 cldap_submit_derive("operations", "unbind-initiated", opi, st);
299 } else if (strcmp(dn, "cn=Search,cn=Operations,cn=Monitor") == 0) {
300 cldap_submit_derive("operations", "search-completed", opc, st);
301 cldap_submit_derive("operations", "search-initiated", opi, st);
302 } else if (strcmp(dn, "cn=Compare,cn=Operations,cn=Monitor") == 0) {
303 cldap_submit_derive("operations", "compare-completed", opc, st);
304 cldap_submit_derive("operations", "compare-initiated", opi, st);
305 } else if (strcmp(dn, "cn=Modify,cn=Operations,cn=Monitor") == 0) {
306 cldap_submit_derive("operations", "modify-completed", opc, st);
307 cldap_submit_derive("operations", "modify-initiated", opi, st);
308 } else if (strcmp(dn, "cn=Modrdn,cn=Operations,cn=Monitor") == 0) {
309 cldap_submit_derive("operations", "modrdn-completed", opc, st);
310 cldap_submit_derive("operations", "modrdn-initiated", opi, st);
311 } else if (strcmp(dn, "cn=Add,cn=Operations,cn=Monitor") == 0) {
312 cldap_submit_derive("operations", "add-completed", opc, st);
313 cldap_submit_derive("operations", "add-initiated", opi, st);
314 } else if (strcmp(dn, "cn=Delete,cn=Operations,cn=Monitor") == 0) {
315 cldap_submit_derive("operations", "delete-completed", opc, st);
316 cldap_submit_derive("operations", "delete-initiated", opi, st);
317 } else if (strcmp(dn, "cn=Abandon,cn=Operations,cn=Monitor") == 0) {
318 cldap_submit_derive("operations", "abandon-completed", opc, st);
319 cldap_submit_derive("operations", "abandon-initiated", opi, st);
320 } else if (strcmp(dn, "cn=Extended,cn=Operations,cn=Monitor") == 0) {
321 cldap_submit_derive("operations", "extended-completed", opc, st);
322 cldap_submit_derive("operations", "extended-initiated", opi, st);
323 } else if ((strncmp(dn, "cn=Database", 11) == 0) &&
324 ((nc_list = ldap_get_values_len(st->ld, e,
325 "namingContexts")) != NULL)) {
326 nc_data = *nc_list[0];
327 char typeinst[DATA_MAX_NAME_LEN];
329 if ((olmbdb_list =
330 ldap_get_values_len(st->ld, e, "olmBDBEntryCache")) != NULL) {
331 olmbdb_data = *olmbdb_list[0];
332 ssnprintf(typeinst, sizeof(typeinst), "bdbentrycache-%s",
333 nc_data.bv_val);
334 cldap_submit_gauge("cache_size", typeinst, atoll(olmbdb_data.bv_val),
335 st);
336 ldap_value_free_len(olmbdb_list);
337 }
339 if ((olmbdb_list = ldap_get_values_len(st->ld, e, "olmBDBDNCache")) !=
340 NULL) {
341 olmbdb_data = *olmbdb_list[0];
342 ssnprintf(typeinst, sizeof(typeinst), "bdbdncache-%s",
343 nc_data.bv_val);
344 cldap_submit_gauge("cache_size", typeinst, atoll(olmbdb_data.bv_val),
345 st);
346 ldap_value_free_len(olmbdb_list);
347 }
349 if ((olmbdb_list = ldap_get_values_len(st->ld, e, "olmBDBIDLCache")) !=
350 NULL) {
351 olmbdb_data = *olmbdb_list[0];
352 ssnprintf(typeinst, sizeof(typeinst), "bdbidlcache-%s",
353 nc_data.bv_val);
354 cldap_submit_gauge("cache_size", typeinst, atoll(olmbdb_data.bv_val),
355 st);
356 ldap_value_free_len(olmbdb_list);
357 }
359 ldap_value_free_len(nc_list);
360 } else if (strcmp(dn, "cn=Bytes,cn=Statistics,cn=Monitor") == 0) {
361 cldap_submit_derive("derive", "statistics-bytes", counter, st);
362 } else if (strcmp(dn, "cn=PDU,cn=Statistics,cn=Monitor") == 0) {
363 cldap_submit_derive("derive", "statistics-pdu", counter, st);
364 } else if (strcmp(dn, "cn=Entries,cn=Statistics,cn=Monitor") == 0) {
365 cldap_submit_derive("derive", "statistics-entries", counter, st);
366 } else if (strcmp(dn, "cn=Referrals,cn=Statistics,cn=Monitor") == 0) {
367 cldap_submit_derive("derive", "statistics-referrals", counter, st);
368 } else if (strcmp(dn, "cn=Open,cn=Threads,cn=Monitor") == 0) {
369 cldap_submit_gauge("threads", "threads-open", info, st);
370 } else if (strcmp(dn, "cn=Starting,cn=Threads,cn=Monitor") == 0) {
371 cldap_submit_gauge("threads", "threads-starting", info, st);
372 } else if (strcmp(dn, "cn=Active,cn=Threads,cn=Monitor") == 0) {
373 cldap_submit_gauge("threads", "threads-active", info, st);
374 } else if (strcmp(dn, "cn=Pending,cn=Threads,cn=Monitor") == 0) {
375 cldap_submit_gauge("threads", "threads-pending", info, st);
376 } else if (strcmp(dn, "cn=Backload,cn=Threads,cn=Monitor") == 0) {
377 cldap_submit_gauge("threads", "threads-backload", info, st);
378 } else if (strcmp(dn, "cn=Read,cn=Waiters,cn=Monitor") == 0) {
379 cldap_submit_derive("derive", "waiters-read", counter, st);
380 } else if (strcmp(dn, "cn=Write,cn=Waiters,cn=Monitor") == 0) {
381 cldap_submit_derive("derive", "waiters-write", counter, st);
382 }
384 ldap_value_free_len(counter_list);
385 ldap_value_free_len(opc_list);
386 ldap_value_free_len(opi_list);
387 ldap_value_free_len(info_list);
388 }
390 ldap_memfree(dn);
391 }
393 ldap_msgfree(result);
394 return 0;
395 } /* }}} int cldap_read_host */
397 /* Configuration handling functions {{{
398 *
399 * <Plugin ldap>
400 * <Instance "plugin_instance1">
401 * URL "ldap://localhost"
402 * ...
403 * </Instance>
404 * </Plugin>
405 */
407 static int cldap_config_add(oconfig_item_t *ci) /* {{{ */
408 {
409 cldap_t *st;
410 int status;
412 st = calloc(1, sizeof(*st));
413 if (st == NULL) {
414 ERROR("openldap plugin: calloc failed.");
415 return -1;
416 }
418 status = cf_util_get_string(ci, &st->name);
419 if (status != 0) {
420 sfree(st);
421 return status;
422 }
424 st->starttls = 0;
425 st->timeout = (long)CDTIME_T_TO_TIME_T(plugin_get_interval());
426 st->verifyhost = 1;
427 st->version = LDAP_VERSION3;
429 for (int i = 0; i < ci->children_num; i++) {
430 oconfig_item_t *child = ci->children + i;
432 if (strcasecmp("BindDN", child->key) == 0)
433 status = cf_util_get_string(child, &st->binddn);
434 else if (strcasecmp("Password", child->key) == 0)
435 status = cf_util_get_string(child, &st->password);
436 else if (strcasecmp("CACert", child->key) == 0)
437 status = cf_util_get_string(child, &st->cacert);
438 else if (strcasecmp("StartTLS", child->key) == 0)
439 status = cf_util_get_boolean(child, &st->starttls);
440 else if (strcasecmp("Timeout", child->key) == 0)
441 status = cf_util_get_int(child, &st->timeout);
442 else if (strcasecmp("URL", child->key) == 0)
443 status = cf_util_get_string(child, &st->url);
444 else if (strcasecmp("VerifyHost", child->key) == 0)
445 status = cf_util_get_boolean(child, &st->verifyhost);
446 else if (strcasecmp("Version", child->key) == 0)
447 status = cf_util_get_int(child, &st->version);
448 else {
449 WARNING("openldap plugin: Option `%s' not allowed here.", child->key);
450 status = -1;
451 }
453 if (status != 0)
454 break;
455 }
457 /* Check if struct is complete.. */
458 if ((status == 0) && (st->url == NULL)) {
459 ERROR("openldap plugin: Instance `%s': "
460 "No URL has been configured.",
461 st->name);
462 status = -1;
463 }
465 /* Check if URL is valid */
466 if ((status == 0) && (st->url != NULL)) {
467 LDAPURLDesc *ludpp;
469 if (ldap_url_parse(st->url, &ludpp) != 0) {
470 ERROR("openldap plugin: Instance `%s': "
471 "Invalid URL: `%s'",
472 st->name, st->url);
473 status = -1;
474 }
476 if ((status == 0) && (ludpp->lud_host != NULL))
477 st->host = strdup(ludpp->lud_host);
479 ldap_free_urldesc(ludpp);
480 }
482 if (status == 0) {
483 cldap_t **temp;
485 temp = (cldap_t **)realloc(databases,
486 sizeof(*databases) * (databases_num + 1));
488 if (temp == NULL) {
489 ERROR("openldap plugin: realloc failed");
490 status = -1;
491 } else {
492 char callback_name[3 * DATA_MAX_NAME_LEN] = {0};
494 databases = temp;
495 databases[databases_num] = st;
496 databases_num++;
498 ssnprintf(callback_name, sizeof(callback_name), "openldap/%s/%s",
499 (st->host != NULL) ? st->host : hostname_g,
500 (st->name != NULL) ? st->name : "default");
502 status = plugin_register_complex_read(/* group = */ NULL,
503 /* name = */ callback_name,
504 /* callback = */ cldap_read_host,
505 /* interval = */ 0, &(user_data_t){
506 .data = st,
507 });
508 }
509 }
511 if (status != 0) {
512 cldap_free(st);
513 return -1;
514 }
516 return 0;
517 } /* }}} int cldap_config_add */
519 static int cldap_config(oconfig_item_t *ci) /* {{{ */
520 {
521 int status = 0;
523 for (int i = 0; i < ci->children_num; i++) {
524 oconfig_item_t *child = ci->children + i;
526 if (strcasecmp("Instance", child->key) == 0)
527 cldap_config_add(child);
528 else
529 WARNING("openldap plugin: The configuration option "
530 "\"%s\" is not allowed here. Did you "
531 "forget to add an <Instance /> block "
532 "around the configuration?",
533 child->key);
534 } /* for (ci->children) */
536 return status;
537 } /* }}} int cldap_config */
539 /* }}} End of configuration handling functions */
541 static int cldap_init(void) /* {{{ */
542 {
543 /* Initialize LDAP library while still single-threaded as recommended in
544 * ldap_initialize(3) */
545 int debug_level;
546 ldap_get_option(NULL, LDAP_OPT_DEBUG_LEVEL, &debug_level);
547 return 0;
548 } /* }}} int cldap_init */
550 static int cldap_shutdown(void) /* {{{ */
551 {
552 for (size_t i = 0; i < databases_num; i++)
553 if (databases[i]->ld != NULL)
554 ldap_unbind_ext_s(databases[i]->ld, NULL, NULL);
555 sfree(databases);
556 databases_num = 0;
558 return 0;
559 } /* }}} int cldap_shutdown */
561 void module_register(void) /* {{{ */
562 {
563 plugin_register_complex_config("openldap", cldap_config);
564 plugin_register_init("openldap", cldap_init);
565 plugin_register_shutdown("openldap", cldap_shutdown);
566 } /* }}} void module_register */
568 #if defined(__APPLE__)
569 #pragma clang diagnostic pop
570 #endif