1 /**
2 * collectd - src/bind.c
3 * Copyright (C) 2009 Bruno Prémont
4 * Copyright (C) 2009 Florian Forster
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; only version 2 of the License is applicable.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 *
19 * Authors:
20 * Bruno Prémont <bonbons at linux-vserver.org>
21 * Florian Forster <octo at verplant.org>
22 **/
24 #include "config.h"
26 #ifndef _XOPEN_SOURCE
27 # define _XOPEN_SOURCE 600 /* glibc2 needs this for strptime */
28 #endif
30 #include "collectd.h"
31 #include "common.h"
32 #include "plugin.h"
33 #include "configfile.h"
35 /* Some versions of libcurl don't include this themselves and then don't have
36 * fd_set available. */
37 #if HAVE_SYS_SELECT_H
38 # include <sys/select.h>
39 #endif
41 #include <curl/curl.h>
42 #include <libxml/parser.h>
43 #include <libxml/xpath.h>
45 #ifndef BIND_DEFAULT_URL
46 # define BIND_DEFAULT_URL "http://localhost:8053/"
47 #endif
49 /*
50 * Some types used for the callback functions. `translation_table_ptr_t' and
51 * `list_info_ptr_t' are passed to the callbacks in the `void *user_data'
52 * pointer.
53 */
54 typedef int (*list_callback_t) (const char *name, value_t value,
55 time_t current_time, void *user_data);
57 struct cb_view_s
58 {
59 char *name;
61 int qtypes;
62 int resolver_stats;
63 int cacherrsets;
65 char **zones;
66 size_t zones_num;
67 };
68 typedef struct cb_view_s cb_view_t;
70 struct translation_info_s
71 {
72 const char *xml_name;
73 const char *type;
74 const char *type_instance;
75 };
76 typedef struct translation_info_s translation_info_t;
78 struct translation_table_ptr_s
79 {
80 const translation_info_t *table;
81 size_t table_length;
82 const char *plugin_instance;
83 };
84 typedef struct translation_table_ptr_s translation_table_ptr_t;
86 struct list_info_ptr_s
87 {
88 const char *plugin_instance;
89 const char *type;
90 };
91 typedef struct list_info_ptr_s list_info_ptr_t;
93 static char *url = NULL;
94 static int global_opcodes = 1;
95 static int global_qtypes = 1;
96 static int global_server_stats = 1;
97 static int global_zone_maint_stats = 1;
98 static int global_resolver_stats = 0;
99 static int global_memory_stats = 1;
101 static cb_view_t *views = NULL;
102 static size_t views_num = 0;
104 static CURL *curl = NULL;
106 static char *bind_buffer = NULL;
107 static size_t bind_buffer_size = 0;
108 static size_t bind_buffer_fill = 0;
109 static char bind_curl_error[CURL_ERROR_SIZE];
111 /* Translation table for the `nsstats' values. */
112 static const translation_info_t nsstats_translation_table[] = /* {{{ */
113 {
114 /* Requests */
115 { "Requestv4", "dns_request", "IPv4" },
116 { "Requestv6", "dns_request", "IPv6" },
117 { "ReqEdns0", "dns_request", "EDNS0" },
118 { "ReqBadEDNSVer", "dns_request", "BadEDNSVer" },
119 { "ReqTSIG", "dns_request", "TSIG" },
120 { "ReqSIG0", "dns_request", "SIG0" },
121 { "ReqBadSIG", "dns_request", "BadSIG" },
122 { "ReqTCP", "dns_request", "TCP" },
123 /* Rejects */
124 { "AuthQryRej", "dns_reject", "authorative" },
125 { "RecQryRej", "dns_reject", "recursive" },
126 { "XfrRej", "dns_reject", "transfer" },
127 { "UpdateRej", "dns_reject", "update" },
128 /* Responses */
129 { "Response", "dns_response", "normal" },
130 { "TruncatedResp", "dns_response", "truncated" },
131 { "RespEDNS0", "dns_response", "EDNS0" },
132 { "RespTSIG", "dns_response", "TSIG" },
133 { "RespSIG0", "dns_response", "SIG0" },
134 /* Queries */
135 { "QryAuthAns", "dns_query", "authorative" },
136 { "QryNoauthAns", "dns_query", "nonauth" },
137 { "QryReferral", "dns_query", "referral" },
138 { "QryRecursion", "dns_query", "recursion" },
139 { "QryDuplicate", "dns_query", "dupliate" },
140 { "QryDropped", "dns_query", "dropped" },
141 { "QryFailure", "dns_query", "failure" },
142 /* Response codes */
143 { "QrySuccess", "dns_rcode", "tx-NOERROR" },
144 { "QryNxrrset", "dns_rcode", "tx-NXRRSET" },
145 { "QrySERVFAIL", "dns_rcode", "tx-SERVFAIL" },
146 { "QryFORMERR", "dns_rcode", "tx-FORMERR" },
147 { "QryNXDOMAIN", "dns_rcode", "tx-NXDOMAIN" }
148 #if 0
149 { "XfrReqDone", "type", "type_instance" },
150 { "UpdateReqFwd", "type", "type_instance" },
151 { "UpdateRespFwd", "type", "type_instance" },
152 { "UpdateFwdFail", "type", "type_instance" },
153 { "UpdateDone", "type", "type_instance" },
154 { "UpdateFail", "type", "type_instance" },
155 { "UpdateBadPrereq", "type", "type_instance" },
156 #endif
157 };
158 static int nsstats_translation_table_length =
159 STATIC_ARRAY_SIZE (nsstats_translation_table);
160 /* }}} */
162 /* Translation table for the `zonestats' values. */
163 static const translation_info_t zonestats_translation_table[] = /* {{{ */
164 {
165 /* Notify's */
166 { "NotifyOutv4", "dns_notify", "tx-IPv4" },
167 { "NotifyOutv6", "dns_notify", "tx-IPv6" },
168 { "NotifyInv4", "dns_notify", "rx-IPv4" },
169 { "NotifyInv6", "dns_notify", "rx-IPv6" },
170 { "NotifyRej", "dns_notify", "rejected" },
171 /* SOA/AXFS/IXFS requests */
172 { "SOAOutv4", "dns_opcode", "SOA-IPv4" },
173 { "SOAOutv6", "dns_opcode", "SOA-IPv6" },
174 { "AXFRReqv4", "dns_opcode", "AXFR-IPv4" },
175 { "AXFRReqv6", "dns_opcode", "AXFR-IPv6" },
176 { "IXFRReqv4", "dns_opcode", "IXFR-IPv4" },
177 { "IXFRReqv6", "dns_opcode", "IXFR-IPv6" },
178 /* Domain transfers */
179 { "XfrSuccess", "dns_transfer", "success" },
180 { "XfrFail", "dns_transfer", "failure" }
181 };
182 static int zonestats_translation_table_length =
183 STATIC_ARRAY_SIZE (zonestats_translation_table);
184 /* }}} */
186 /* Translation table for the `resstats' values. */
187 static const translation_info_t resstats_translation_table[] = /* {{{ */
188 {
189 /* Generic resolver information */
190 { "Queryv4", "dns_query", "IPv4" },
191 { "Queryv6", "dns_query", "IPv6" },
192 { "Responsev4", "dns_response", "IPv4" },
193 { "Responsev6", "dns_response", "IPv6" },
194 /* Received response codes */
195 { "NXDOMAIN", "dns_rcode", "rx-NXDOMAIN" },
196 { "SERVFAIL", "dns_rcode", "rx-SERVFAIL" },
197 { "FORMERR", "dns_rcode", "rx-FORMERR" },
198 { "OtherError", "dns_rcode", "rx-OTHER" },
199 { "EDNS0Fail", "dns_rcode", "rx-EDNS0Fail"},
200 /* Received responses */
201 { "Mismatch", "dns_response", "mismatch" },
202 { "Truncated", "dns_response", "truncated" },
203 { "Lame", "dns_response", "lame" },
204 { "Retry", "dns_query", "retry" },
205 #if 0
206 { "GlueFetchv4", "type", "type_instance" },
207 { "GlueFetchv6", "type", "type_instance" },
208 { "GlueFetchv4Fail", "type", "type_instance" },
209 { "GlueFetchv6Fail", "type", "type_instance" },
210 #endif
211 /* DNSSEC information */
212 { "ValAttempt", "dns_resolver", "DNSSEC-attempt" },
213 { "ValOk", "dns_resolver", "DNSSEC-okay" },
214 { "ValNegOk", "dns_resolver", "DNSSEC-negokay" },
215 { "ValFail", "dns_resolver", "DNSSEC-fail" }
216 };
217 static int resstats_translation_table_length =
218 STATIC_ARRAY_SIZE (resstats_translation_table);
219 /* }}} */
221 /* Translation table for the `memory/summary' values. */
222 static const translation_info_t memsummary_translation_table[] = /* {{{ */
223 {
224 { "TotalUse", "memory", "TotalUse" },
225 { "InUse", "memory", "InUse" },
226 { "BlockSize", "memory", "BlockSize" },
227 { "ContextSize", "memory", "ContextSize" },
228 { "Lost", "memory", "Lost" }
229 };
230 static int memsummary_translation_table_length =
231 STATIC_ARRAY_SIZE (memsummary_translation_table);
232 /* }}} */
234 static void submit (time_t ts, const char *plugin_instance, /* {{{ */
235 const char *type, const char *type_instance, value_t value)
236 {
237 value_t values[1];
238 value_list_t vl = VALUE_LIST_INIT;
240 values[0] = value;
242 vl.values = values;
243 vl.values_len = 1;
244 vl.time = ts;
245 sstrncpy(vl.host, hostname_g, sizeof(vl.host));
246 sstrncpy(vl.plugin, "bind", sizeof(vl.plugin));
247 if (plugin_instance) {
248 sstrncpy(vl.plugin_instance, plugin_instance,
249 sizeof(vl.plugin_instance));
250 replace_special (vl.plugin_instance, sizeof (vl.plugin_instance));
251 }
252 sstrncpy(vl.type, type, sizeof(vl.type));
253 if (type_instance) {
254 sstrncpy(vl.type_instance, type_instance,
255 sizeof(vl.type_instance));
256 replace_special (vl.plugin_instance, sizeof (vl.plugin_instance));
257 }
258 plugin_dispatch_values(&vl);
259 } /* }}} void submit */
261 static size_t bind_curl_callback (void *buf, size_t size, /* {{{ */
262 size_t nmemb, void __attribute__((unused)) *stream)
263 {
264 size_t len = size * nmemb;
266 if (len <= 0)
267 return (len);
269 if ((bind_buffer_fill + len) >= bind_buffer_size)
270 {
271 char *temp;
273 temp = realloc(bind_buffer, bind_buffer_fill + len + 1);
274 if (temp == NULL)
275 {
276 ERROR ("bind plugin: realloc failed.");
277 return (0);
278 }
279 bind_buffer = temp;
280 bind_buffer_size = bind_buffer_fill + len + 1;
281 }
283 memcpy (bind_buffer + bind_buffer_fill, (char *) buf, len);
284 bind_buffer_fill += len;
285 bind_buffer[bind_buffer_fill] = 0;
287 return (len);
288 } /* }}} size_t bind_curl_callback */
290 /*
291 * Callback, that's called with a translation table.
292 * (Plugin instance is fixed, type and type instance come from lookup table.)
293 */
294 static int bind_xml_table_callback (const char *name, value_t value, /* {{{ */
295 time_t current_time, void *user_data)
296 {
297 translation_table_ptr_t *table = (translation_table_ptr_t *) user_data;
298 size_t i;
300 if (table == NULL)
301 return (-1);
303 for (i = 0; i < table->table_length; i++)
304 {
305 if (strcmp (table->table[i].xml_name, name) != 0)
306 continue;
308 submit (current_time,
309 table->plugin_instance,
310 table->table[i].type,
311 table->table[i].type_instance,
312 value);
313 break;
314 }
316 return (0);
317 } /* }}} int bind_xml_table_callback */
319 /*
320 * Callback, that's used for lists.
321 * (Plugin instance and type are fixed, xml name is used as type instance.)
322 */
323 static int bind_xml_list_callback (const char *name, /* {{{ */
324 value_t value, time_t current_time, void *user_data)
325 {
326 list_info_ptr_t *list_info = (list_info_ptr_t *) user_data;
328 if (list_info == NULL)
329 return (-1);
331 submit (current_time,
332 list_info->plugin_instance,
333 list_info->type,
334 /* type instance = */ name,
335 value);
337 return (0);
338 } /* }}} int bind_xml_list_callback */
340 static int bind_xml_read_counter (xmlDoc *doc, xmlNode *node, /* {{{ */
341 counter_t *ret_value)
342 {
343 char *str_ptr, *end_ptr;
344 long long int value;
346 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
347 if (str_ptr == NULL)
348 {
349 ERROR ("bind plugin: bind_xml_read_counter: xmlNodeListGetString failed.");
350 return (-1);
351 }
353 errno = 0;
354 value = strtoll (str_ptr, &end_ptr, 10);
355 xmlFree(str_ptr);
356 if (str_ptr == end_ptr || errno)
357 {
358 if (errno && (value < 0))
359 ERROR ("bind plugin: bind_xml_read_counter: strtoll failed with underflow.");
360 else if (errno && (value > 0))
361 ERROR ("bind plugin: bind_xml_read_counter: strtoll failed with overflow.");
362 else
363 ERROR ("bind plugin: bind_xml_read_counter: strtoll failed.");
364 return (-1);
365 }
367 *ret_value = value;
368 return (0);
369 } /* }}} int bind_xml_read_counter */
371 static int bind_xml_read_gauge (xmlDoc *doc, xmlNode *node, /* {{{ */
372 gauge_t *ret_value)
373 {
374 char *str_ptr, *end_ptr;
375 double value;
377 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
378 if (str_ptr == NULL)
379 {
380 ERROR ("bind plugin: bind_xml_read_gauge: xmlNodeListGetString failed.");
381 return (-1);
382 }
384 errno = 0;
385 value = strtod (str_ptr, &end_ptr);
386 xmlFree(str_ptr);
387 if (str_ptr == end_ptr || errno)
388 {
389 if (errno && (value < 0))
390 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed with underflow.");
391 else if (errno && (value > 0))
392 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed with overflow.");
393 else
394 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed.");
395 return (-1);
396 }
398 *ret_value = (gauge_t) value;
399 return (0);
400 } /* }}} int bind_xml_read_gauge */
402 static int bind_xml_read_timestamp (const char *xpath_expression, /* {{{ */
403 xmlDoc *doc, xmlXPathContext *xpathCtx, time_t *ret_value)
404 {
405 xmlXPathObject *xpathObj = NULL;
406 xmlNode *node;
407 char *str_ptr;
408 char *tmp;
409 struct tm tm;
411 xpathObj = xmlXPathEvalExpression (BAD_CAST xpath_expression, xpathCtx);
412 if (xpathObj == NULL)
413 {
414 ERROR ("bind plugin: Unable to evaluate XPath expression `%s'.",
415 xpath_expression);
416 return (-1);
417 }
419 if ((xpathObj->nodesetval == NULL) || (xpathObj->nodesetval->nodeNr < 1))
420 {
421 xmlXPathFreeObject (xpathObj);
422 return (-1);
423 }
425 if (xpathObj->nodesetval->nodeNr != 1)
426 {
427 NOTICE ("bind plugin: Evaluating the XPath expression `%s' returned "
428 "%i nodes. Only handling the first one.",
429 xpath_expression, xpathObj->nodesetval->nodeNr);
430 }
432 node = xpathObj->nodesetval->nodeTab[0];
434 if (node->xmlChildrenNode == NULL)
435 {
436 ERROR ("bind plugin: bind_xml_read_timestamp: "
437 "node->xmlChildrenNode == NULL");
438 xmlXPathFreeObject (xpathObj);
439 return (-1);
440 }
442 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
443 if (str_ptr == NULL)
444 {
445 ERROR ("bind plugin: bind_xml_read_timestamp: xmlNodeListGetString failed.");
446 xmlXPathFreeObject (xpathObj);
447 return (-1);
448 }
450 memset (&tm, 0, sizeof(tm));
451 tmp = strptime (str_ptr, "%Y-%m-%dT%T", &tm);
452 xmlFree(str_ptr);
453 if (tmp == NULL)
454 {
455 ERROR ("bind plugin: bind_xml_read_timestamp: strptime failed.");
456 xmlXPathFreeObject (xpathObj);
457 return (-1);
458 }
460 *ret_value = mktime(&tm);
462 xmlXPathFreeObject (xpathObj);
463 return (0);
464 } /* }}} int bind_xml_read_timestamp */
466 /*
467 * bind_parse_generic_name_value
468 *
469 * Reads statistics in the form:
470 * <foo>
471 * <name>QUERY</name>
472 * <counter>123</counter>
473 * </foo>
474 */
475 static int bind_parse_generic_name_value (const char *xpath_expression, /* {{{ */
476 list_callback_t list_callback,
477 void *user_data,
478 xmlDoc *doc, xmlXPathContext *xpathCtx,
479 time_t current_time, int ds_type)
480 {
481 xmlXPathObject *xpathObj = NULL;
482 int num_entries;
483 int i;
485 xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
486 if (xpathObj == NULL)
487 {
488 ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
489 xpath_expression);
490 return (-1);
491 }
493 num_entries = 0;
494 /* Iterate over all matching nodes. */
495 for (i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++)
496 {
497 xmlNode *name_node = NULL;
498 xmlNode *counter = NULL;
499 xmlNode *parent;
500 xmlNode *child;
502 parent = xpathObj->nodesetval->nodeTab[i];
503 DEBUG ("bind plugin: bind_parse_generic_name_value: parent->name = %s;",
504 (char *) parent->name);
506 /* Iterate over all child nodes. */
507 for (child = parent->xmlChildrenNode;
508 child != NULL;
509 child = child->next)
510 {
511 if (child->type != XML_ELEMENT_NODE)
512 continue;
514 if (xmlStrcmp (BAD_CAST "name", child->name) == 0)
515 name_node = child;
516 else if (xmlStrcmp (BAD_CAST "counter", child->name) == 0)
517 counter = child;
518 }
520 if ((name_node != NULL) && (counter != NULL))
521 {
522 char *name = (char *) xmlNodeListGetString (doc,
523 name_node->xmlChildrenNode, 1);
524 value_t value;
525 int status;
527 if (ds_type == DS_TYPE_GAUGE)
528 status = bind_xml_read_gauge (doc, counter, &value.gauge);
529 else
530 status = bind_xml_read_counter (doc, counter, &value.counter);
531 if (status != 0)
532 continue;
534 status = (*list_callback) (name, value, current_time, user_data);
535 if (status == 0)
536 num_entries++;
538 xmlFree (name);
539 }
540 }
542 DEBUG ("bind plugin: Found %d %s for XPath expression `%s'",
543 num_entries, (num_entries == 1) ? "entry" : "entries",
544 xpath_expression);
546 xmlXPathFreeObject(xpathObj);
548 return (0);
549 } /* }}} int bind_parse_generic_name_value */
551 /*
552 * bind_parse_generic_value_list
553 *
554 * Reads statistics in the form:
555 * <foo>
556 * <name0>123</name0>
557 * <name1>234</name1>
558 * <name2>345</name2>
559 * :
560 * </foo>
561 */
562 static int bind_parse_generic_value_list (const char *xpath_expression, /* {{{ */
563 list_callback_t list_callback,
564 void *user_data,
565 xmlDoc *doc, xmlXPathContext *xpathCtx,
566 time_t current_time, int ds_type)
567 {
568 xmlXPathObject *xpathObj = NULL;
569 int num_entries;
570 int i;
572 xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
573 if (xpathObj == NULL)
574 {
575 ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
576 xpath_expression);
577 return (-1);
578 }
580 num_entries = 0;
581 /* Iterate over all matching nodes. */
582 for (i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++)
583 {
584 xmlNode *child;
586 /* Iterate over all child nodes. */
587 for (child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode;
588 child != NULL;
589 child = child->next)
590 {
591 char *node_name;
592 value_t value;
593 int status;
595 if (child->type != XML_ELEMENT_NODE)
596 continue;
598 node_name = (char *) child->name;
600 if (ds_type == DS_TYPE_GAUGE)
601 status = bind_xml_read_gauge (doc, child, &value.gauge);
602 else
603 status = bind_xml_read_counter (doc, child, &value.counter);
604 if (status != 0)
605 continue;
607 status = (*list_callback) (node_name, value, current_time, user_data);
608 if (status == 0)
609 num_entries++;
610 }
611 }
613 DEBUG ("bind plugin: Found %d %s for XPath expression `%s'",
614 num_entries, (num_entries == 1) ? "entry" : "entries",
615 xpath_expression);
617 xmlXPathFreeObject(xpathObj);
619 return (0);
620 } /* }}} int bind_parse_generic_value_list */
622 static int bind_xml_stats_handle_zone (int version, xmlDoc *doc, /* {{{ */
623 xmlXPathContext *path_ctx, xmlNode *node, cb_view_t *view,
624 time_t current_time)
625 {
626 xmlXPathObject *path_obj;
627 char *zone_name = NULL;
628 int i;
629 size_t j;
631 path_obj = xmlXPathEvalExpression (BAD_CAST "name", path_ctx);
632 if (path_obj == NULL)
633 {
634 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
635 return (-1);
636 }
638 for (i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr); i++)
639 {
640 zone_name = (char *) xmlNodeListGetString (doc,
641 path_obj->nodesetval->nodeTab[i]->xmlChildrenNode, 1);
642 if (zone_name != NULL)
643 break;
644 }
646 if (zone_name == NULL)
647 {
648 ERROR ("bind plugin: Could not determine zone name.");
649 xmlXPathFreeObject (path_obj);
650 return (-1);
651 }
653 for (j = 0; j < view->zones_num; j++)
654 {
655 if (strcasecmp (zone_name, view->zones[j]) == 0)
656 break;
657 }
659 xmlFree (zone_name);
660 zone_name = NULL;
662 if (j >= views_num)
663 {
664 xmlXPathFreeObject (path_obj);
665 return (0);
666 }
668 zone_name = view->zones[j];
670 DEBUG ("bind plugin: bind_xml_stats_handle_zone: Found zone `%s'.",
671 zone_name);
673 { /* Parse the <counters> tag {{{ */
674 char plugin_instance[DATA_MAX_NAME_LEN];
675 translation_table_ptr_t table_ptr =
676 {
677 nsstats_translation_table,
678 nsstats_translation_table_length,
679 plugin_instance
680 };
682 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-zone-%s",
683 view->name, zone_name);
685 bind_parse_generic_value_list (/* xpath = */ "counters",
686 /* callback = */ bind_xml_table_callback,
687 /* user_data = */ &table_ptr,
688 doc, path_ctx, current_time, DS_TYPE_COUNTER);
689 } /* }}} */
691 xmlXPathFreeObject (path_obj);
693 return (0);
694 } /* }}} int bind_xml_stats_handle_zone */
696 static int bind_xml_stats_search_zones (int version, xmlDoc *doc, /* {{{ */
697 xmlXPathContext *path_ctx, xmlNode *node, cb_view_t *view,
698 time_t current_time)
699 {
700 xmlXPathObject *zone_nodes = NULL;
701 xmlXPathContext *zone_path_context;
702 int i;
704 zone_path_context = xmlXPathNewContext (doc);
705 if (zone_path_context == NULL)
706 {
707 ERROR ("bind plugin: xmlXPathNewContext failed.");
708 return (-1);
709 }
711 zone_nodes = xmlXPathEvalExpression (BAD_CAST "zones/zone", path_ctx);
712 if (zone_nodes == NULL)
713 {
714 ERROR ("bind plugin: Cannot find any <view> tags.");
715 xmlXPathFreeContext (zone_path_context);
716 return (-1);
717 }
719 for (i = 0; i < zone_nodes->nodesetval->nodeNr; i++)
720 {
721 xmlNode *node;
723 node = zone_nodes->nodesetval->nodeTab[i];
724 assert (node != NULL);
726 zone_path_context->node = node;
728 bind_xml_stats_handle_zone (version, doc, zone_path_context, node, view,
729 current_time);
730 }
732 xmlXPathFreeObject (zone_nodes);
733 xmlXPathFreeContext (zone_path_context);
734 return (0);
735 } /* }}} int bind_xml_stats_search_zones */
737 static int bind_xml_stats_handle_view (int version, xmlDoc *doc, /* {{{ */
738 xmlXPathContext *path_ctx, xmlNode *node, time_t current_time)
739 {
740 xmlXPathObject *path_obj;
741 char *view_name = NULL;
742 cb_view_t *view;
743 int i;
744 size_t j;
746 path_obj = xmlXPathEvalExpression (BAD_CAST "name", path_ctx);
747 if (path_obj == NULL)
748 {
749 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
750 return (-1);
751 }
753 for (i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr); i++)
754 {
755 view_name = (char *) xmlNodeListGetString (doc,
756 path_obj->nodesetval->nodeTab[i]->xmlChildrenNode, 1);
757 if (view_name != NULL)
758 break;
759 }
761 if (view_name == NULL)
762 {
763 ERROR ("bind plugin: Could not determine view name.");
764 xmlXPathFreeObject (path_obj);
765 return (-1);
766 }
768 for (j = 0; j < views_num; j++)
769 {
770 if (strcasecmp (view_name, views[j].name) == 0)
771 break;
772 }
774 xmlFree (view_name);
775 xmlXPathFreeObject (path_obj);
777 view_name = NULL;
778 path_obj = NULL;
780 if (j >= views_num)
781 return (0);
783 view = views + j;
785 DEBUG ("bind plugin: bind_xml_stats_handle_view: Found view `%s'.",
786 view->name);
788 if (view->qtypes != 0) /* {{{ */
789 {
790 char plugin_instance[DATA_MAX_NAME_LEN];
791 list_info_ptr_t list_info =
792 {
793 plugin_instance,
794 /* type = */ "dns_qtype_gauge"
795 };
797 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-qtypes",
798 view->name);
800 bind_parse_generic_name_value (/* xpath = */ "rdtype",
801 /* callback = */ bind_xml_list_callback,
802 /* user_data = */ &list_info,
803 doc, path_ctx, current_time, DS_TYPE_COUNTER);
804 } /* }}} */
806 if (view->resolver_stats != 0) /* {{{ */
807 {
808 char plugin_instance[DATA_MAX_NAME_LEN];
809 translation_table_ptr_t table_ptr =
810 {
811 resstats_translation_table,
812 resstats_translation_table_length,
813 plugin_instance
814 };
816 ssnprintf (plugin_instance, sizeof (plugin_instance),
817 "%s-resolver_stats", view->name);
819 bind_parse_generic_name_value ("resstat",
820 /* callback = */ bind_xml_table_callback,
821 /* user_data = */ &table_ptr,
822 doc, path_ctx, current_time, DS_TYPE_COUNTER);
823 } /* }}} */
825 if (view->cacherrsets != 0) /* {{{ */
826 {
827 char plugin_instance[DATA_MAX_NAME_LEN];
828 list_info_ptr_t list_info =
829 {
830 plugin_instance,
831 /* type = */ "dns_qtype_gauge"
832 };
834 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-cache_rr_sets",
835 view->name);
837 bind_parse_generic_name_value (/* xpath = */ "cache/rrset",
838 /* callback = */ bind_xml_list_callback,
839 /* user_data = */ &list_info,
840 doc, path_ctx, current_time, DS_TYPE_GAUGE);
841 } /* }}} */
843 if (view->zones_num > 0)
844 bind_xml_stats_search_zones (version, doc, path_ctx, node, view,
845 current_time);
847 return (0);
848 } /* }}} int bind_xml_stats_handle_view */
850 static int bind_xml_stats_search_views (int version, xmlDoc *doc, /* {{{ */
851 xmlXPathContext *xpathCtx, xmlNode *statsnode, time_t current_time)
852 {
853 xmlXPathObject *view_nodes = NULL;
854 xmlXPathContext *view_path_context;
855 int i;
857 view_path_context = xmlXPathNewContext (doc);
858 if (view_path_context == NULL)
859 {
860 ERROR ("bind plugin: xmlXPathNewContext failed.");
861 return (-1);
862 }
864 view_nodes = xmlXPathEvalExpression (BAD_CAST "views/view", xpathCtx);
865 if (view_nodes == NULL)
866 {
867 ERROR ("bind plugin: Cannot find any <view> tags.");
868 xmlXPathFreeContext (view_path_context);
869 return (-1);
870 }
872 for (i = 0; i < view_nodes->nodesetval->nodeNr; i++)
873 {
874 xmlNode *node;
876 node = view_nodes->nodesetval->nodeTab[i];
877 assert (node != NULL);
879 view_path_context->node = node;
881 bind_xml_stats_handle_view (version, doc, view_path_context, node,
882 current_time);
883 }
885 xmlXPathFreeObject (view_nodes);
886 xmlXPathFreeContext (view_path_context);
887 return (0);
888 } /* }}} int bind_xml_stats_search_views */
890 static int bind_xml_stats (int version, xmlDoc *doc, /* {{{ */
891 xmlXPathContext *xpathCtx, xmlNode *statsnode)
892 {
893 time_t current_time = 0;
894 int status;
896 xpathCtx->node = statsnode;
898 /* TODO: Check `server/boot-time' to recognize server restarts. */
900 status = bind_xml_read_timestamp ("server/current-time",
901 doc, xpathCtx, ¤t_time);
902 if (status != 0)
903 {
904 ERROR ("bind plugin: Reading `server/current-time' failed.");
905 return (-1);
906 }
907 DEBUG ("bind plugin: Current server time is %i.", (int) current_time);
909 /* XPath: server/requests/opcode
910 * Variables: QUERY, IQUERY, NOTIFY, UPDATE, ...
911 * Layout:
912 * <opcode>
913 * <name>A</name>
914 * <counter>1</counter>
915 * </opcode>
916 * :
917 */
918 if (global_opcodes != 0)
919 {
920 list_info_ptr_t list_info =
921 {
922 /* plugin instance = */ "global-opcodes",
923 /* type = */ "dns_opcode"
924 };
926 bind_parse_generic_name_value (/* xpath = */ "server/requests/opcode",
927 /* callback = */ bind_xml_list_callback,
928 /* user_data = */ &list_info,
929 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
930 }
932 /* XPath: server/queries-in/rdtype
933 * Variables: RESERVED0, A, NS, CNAME, SOA, MR, PTR, HINFO, MX, TXT, RP,
934 * X25, PX, AAAA, LOC, SRV, NAPTR, A6, DS, RRSIG, NSEC, DNSKEY,
935 * SPF, TKEY, IXFR, AXFR, ANY, ..., Others
936 * Layout:
937 * <rdtype>
938 * <name>A</name>
939 * <counter>1</counter>
940 * </rdtype>
941 * :
942 */
943 if (global_qtypes != 0)
944 {
945 list_info_ptr_t list_info =
946 {
947 /* plugin instance = */ "global-qtypes",
948 /* type = */ "dns_qtype"
949 };
951 bind_parse_generic_name_value (/* xpath = */ "server/queries-in/rdtype",
952 /* callback = */ bind_xml_list_callback,
953 /* user_data = */ &list_info,
954 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
955 }
957 /* XPath: server/nsstats, server/nsstat
958 * Variables: Requestv4, Requestv6, ReqEdns0, ReqBadEDNSVer, ReqTSIG,
959 * ReqSIG0, ReqBadSIG, ReqTCP, AuthQryRej, RecQryRej, XfrRej,
960 * UpdateRej, Response, TruncatedResp, RespEDNS0, RespTSIG,
961 * RespSIG0, QrySuccess, QryAuthAns, QryNoauthAns, QryReferral,
962 * QryNxrrset, QrySERVFAIL, QryFORMERR, QryNXDOMAIN, QryRecursion,
963 * QryDuplicate, QryDropped, QryFailure, XfrReqDone, UpdateReqFwd,
964 * UpdateRespFwd, UpdateFwdFail, UpdateDone, UpdateFail,
965 * UpdateBadPrereq
966 * Layout v1:
967 * <nsstats>
968 * <Requestv4>1</Requestv4>
969 * <Requestv6>0</Requestv6>
970 * :
971 * </nsstats>
972 * Layout v2:
973 * <nsstat>
974 * <name>Requestv4</name>
975 * <counter>1</counter>
976 * </nsstat>
977 * <nsstat>
978 * <name>Requestv6</name>
979 * <counter>0</counter>
980 * </nsstat>
981 * :
982 */
983 if (global_server_stats)
984 {
985 translation_table_ptr_t table_ptr =
986 {
987 nsstats_translation_table,
988 nsstats_translation_table_length,
989 /* plugin_instance = */ "global-server_stats"
990 };
992 if (version == 1)
993 {
994 bind_parse_generic_value_list ("server/nsstats",
995 /* callback = */ bind_xml_table_callback,
996 /* user_data = */ &table_ptr,
997 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
998 }
999 else
1000 {
1001 bind_parse_generic_name_value ("server/nsstat",
1002 /* callback = */ bind_xml_table_callback,
1003 /* user_data = */ &table_ptr,
1004 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1005 }
1006 }
1008 /* XPath: server/zonestats, server/zonestat
1009 * Variables: NotifyOutv4, NotifyOutv6, NotifyInv4, NotifyInv6, NotifyRej,
1010 * SOAOutv4, SOAOutv6, AXFRReqv4, AXFRReqv6, IXFRReqv4, IXFRReqv6,
1011 * XfrSuccess, XfrFail
1012 * Layout v1:
1013 * <zonestats>
1014 * <NotifyOutv4>0</NotifyOutv4>
1015 * <NotifyOutv6>0</NotifyOutv6>
1016 * :
1017 * </zonestats>
1018 * Layout v2:
1019 * <zonestat>
1020 * <name>NotifyOutv4</name>
1021 * <counter>0</counter>
1022 * </zonestat>
1023 * <zonestat>
1024 * <name>NotifyOutv6</name>
1025 * <counter>0</counter>
1026 * </zonestat>
1027 * :
1028 */
1029 if (global_zone_maint_stats)
1030 {
1031 translation_table_ptr_t table_ptr =
1032 {
1033 zonestats_translation_table,
1034 zonestats_translation_table_length,
1035 /* plugin_instance = */ "global-zone_maint_stats"
1036 };
1038 if (version == 1)
1039 {
1040 bind_parse_generic_value_list ("server/zonestats",
1041 /* callback = */ bind_xml_table_callback,
1042 /* user_data = */ &table_ptr,
1043 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1044 }
1045 else
1046 {
1047 bind_parse_generic_name_value ("server/zonestat",
1048 /* callback = */ bind_xml_table_callback,
1049 /* user_data = */ &table_ptr,
1050 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1051 }
1052 }
1054 /* XPath: server/resstats
1055 * Variables: Queryv4, Queryv6, Responsev4, Responsev6, NXDOMAIN, SERVFAIL,
1056 * FORMERR, OtherError, EDNS0Fail, Mismatch, Truncated, Lame,
1057 * Retry, GlueFetchv4, GlueFetchv6, GlueFetchv4Fail,
1058 * GlueFetchv6Fail, ValAttempt, ValOk, ValNegOk, ValFail
1059 * Layout v1:
1060 * <resstats>
1061 * <Queryv4>0</Queryv4>
1062 * <Queryv6>0</Queryv6>
1063 * :
1064 * </resstats>
1065 * Layout v2:
1066 * <resstat>
1067 * <name>Queryv4</name>
1068 * <counter>0</counter>
1069 * </resstat>
1070 * <resstat>
1071 * <name>Queryv6</name>
1072 * <counter>0</counter>
1073 * </resstat>
1074 * :
1075 */
1076 if (global_resolver_stats != 0)
1077 {
1078 translation_table_ptr_t table_ptr =
1079 {
1080 resstats_translation_table,
1081 resstats_translation_table_length,
1082 /* plugin_instance = */ "global-resolver_stats"
1083 };
1085 if (version == 1)
1086 {
1087 bind_parse_generic_value_list ("server/resstats",
1088 /* callback = */ bind_xml_table_callback,
1089 /* user_data = */ &table_ptr,
1090 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1091 }
1092 else
1093 {
1094 bind_parse_generic_name_value ("server/resstat",
1095 /* callback = */ bind_xml_table_callback,
1096 /* user_data = */ &table_ptr,
1097 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1098 }
1099 }
1101 /* XPath: memory/summary
1102 * Variables: TotalUse, InUse, BlockSize, ContextSize, Lost
1103 * Layout: v2:
1104 * <summary>
1105 * <TotalUse>6587096</TotalUse>
1106 * <InUse>1345424</InUse>
1107 * <BlockSize>5505024</BlockSize>
1108 * <ContextSize>3732456</ContextSize>
1109 * <Lost>0</Lost>
1110 * </summary>
1111 */
1112 if (global_memory_stats != 0)
1113 {
1114 translation_table_ptr_t table_ptr =
1115 {
1116 memsummary_translation_table,
1117 memsummary_translation_table_length,
1118 /* plugin_instance = */ "global-memory_stats"
1119 };
1121 bind_parse_generic_value_list ("memory/summary",
1122 /* callback = */ bind_xml_table_callback,
1123 /* user_data = */ &table_ptr,
1124 doc, xpathCtx, current_time, DS_TYPE_GAUGE);
1125 }
1127 if (views_num > 0)
1128 bind_xml_stats_search_views (version, doc, xpathCtx, statsnode,
1129 current_time);
1131 return 0;
1132 } /* }}} int bind_xml_stats */
1134 static int bind_xml (const char *data) /* {{{ */
1135 {
1136 xmlDoc *doc = NULL;
1137 xmlXPathContext *xpathCtx = NULL;
1138 xmlXPathObject *xpathObj = NULL;
1139 int ret = -1;
1140 int i;
1142 doc = xmlParseMemory (data, strlen (data));
1143 if (doc == NULL)
1144 {
1145 ERROR ("bind plugin: xmlParseMemory failed.");
1146 return (-1);
1147 }
1149 xpathCtx = xmlXPathNewContext (doc);
1150 if (xpathCtx == NULL)
1151 {
1152 ERROR ("bind plugin: xmlXPathNewContext failed.");
1153 xmlFreeDoc (doc);
1154 return (-1);
1155 }
1157 xpathObj = xmlXPathEvalExpression (BAD_CAST "/isc/bind/statistics", xpathCtx);
1158 if (xpathObj == NULL)
1159 {
1160 ERROR ("bind plugin: Cannot find the <statistics> tag.");
1161 xmlXPathFreeContext (xpathCtx);
1162 xmlFreeDoc (doc);
1163 return (-1);
1164 }
1165 else if (xpathObj->nodesetval == NULL)
1166 {
1167 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
1168 xmlXPathFreeObject (xpathObj);
1169 xmlXPathFreeContext (xpathCtx);
1170 xmlFreeDoc (doc);
1171 return (-1);
1172 }
1174 for (i = 0; i < xpathObj->nodesetval->nodeNr; i++)
1175 {
1176 xmlNode *node;
1177 char *attr_version;
1178 int parsed_version = 0;
1180 node = xpathObj->nodesetval->nodeTab[i];
1181 assert (node != NULL);
1183 attr_version = (char *) xmlGetProp (node, BAD_CAST "version");
1184 if (attr_version == NULL)
1185 {
1186 NOTICE ("bind plugin: Found <statistics> tag doesn't have a "
1187 "`version' attribute.");
1188 continue;
1189 }
1190 DEBUG ("bind plugin: Found: <statistics version=\"%s\">", attr_version);
1192 /* At the time this plugin was written, version "1.0" was used by
1193 * BIND 9.5.0, version "2.0" was used by BIND 9.5.1 and 9.6.0. We assume
1194 * that "1.*" and "2.*" don't introduce structural changes, so we just
1195 * check for the first two characters here. */
1196 if (strncmp ("1.", attr_version, strlen ("1.")) == 0)
1197 parsed_version = 1;
1198 else if (strncmp ("2.", attr_version, strlen ("2.")) == 0)
1199 parsed_version = 2;
1200 else
1201 {
1202 /* TODO: Use the complaint mechanism here. */
1203 NOTICE ("bind plugin: Found <statistics> tag with version `%s'. "
1204 "Unfortunately I have no clue how to parse that. "
1205 "Please open a bug report for this.", attr_version);
1206 xmlFree (attr_version);
1207 continue;
1208 }
1210 ret = bind_xml_stats (parsed_version,
1211 doc, xpathCtx, node);
1213 xmlFree (attr_version);
1214 /* One <statistics> node ought to be enough. */
1215 break;
1216 }
1218 xmlXPathFreeObject (xpathObj);
1219 xmlXPathFreeContext (xpathCtx);
1220 xmlFreeDoc (doc);
1222 return (ret);
1223 } /* }}} int bind_xml */
1225 static int bind_config_set_bool (const char *name, int *var, /* {{{ */
1226 oconfig_item_t *ci)
1227 {
1228 if ((ci->values_num != 1) || ( ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
1229 {
1230 WARNING ("bind plugin: The `%s' option needs "
1231 "exactly one boolean argument.", name);
1232 return (-1);
1233 }
1235 if (ci->values[0].value.boolean)
1236 *var = 1;
1237 else
1238 *var = 0;
1239 return 0;
1240 } /* }}} int bind_config_set_bool */
1242 static int bind_config_add_view_zone (cb_view_t *view, /* {{{ */
1243 oconfig_item_t *ci)
1244 {
1245 char **tmp;
1247 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1248 {
1249 WARNING ("bind plugin: The `Zone' option needs "
1250 "exactly one string argument.");
1251 return (-1);
1252 }
1254 tmp = (char **) realloc (view->zones,
1255 sizeof (char *) * (view->zones_num + 1));
1256 if (tmp == NULL)
1257 {
1258 ERROR ("bind plugin: realloc failed.");
1259 return (-1);
1260 }
1261 view->zones = tmp;
1263 view->zones[view->zones_num] = strdup (ci->values[0].value.string);
1264 if (view->zones[view->zones_num] == NULL)
1265 {
1266 ERROR ("bind plugin: strdup failed.");
1267 return (-1);
1268 }
1269 view->zones_num++;
1271 return (0);
1272 } /* }}} int bind_config_add_view_zone */
1274 static int bind_config_add_view (oconfig_item_t *ci) /* {{{ */
1275 {
1276 cb_view_t *tmp;
1277 int i;
1279 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1280 {
1281 WARNING ("bind plugin: `View' blocks need exactly one string argument.");
1282 return (-1);
1283 }
1285 tmp = (cb_view_t *) realloc (views, sizeof (*views) * (views_num + 1));
1286 if (tmp == NULL)
1287 {
1288 ERROR ("bind plugin: realloc failed.");
1289 return (-1);
1290 }
1291 views = tmp;
1292 tmp = views + views_num;
1294 memset (tmp, 0, sizeof (*tmp));
1295 tmp->qtypes = 1;
1296 tmp->resolver_stats = 1;
1297 tmp->cacherrsets = 1;
1298 tmp->zones = NULL;
1299 tmp->zones_num = 0;
1301 tmp->name = strdup (ci->values[0].value.string);
1302 if (tmp->name == NULL)
1303 {
1304 ERROR ("bind plugin: strdup failed.");
1305 free (tmp);
1306 return (-1);
1307 }
1309 for (i = 0; i < ci->children_num; i++)
1310 {
1311 oconfig_item_t *child = ci->children + i;
1313 if (strcasecmp ("QTypes", child->key) == 0)
1314 bind_config_set_bool ("QTypes", &tmp->qtypes, child);
1315 else if (strcasecmp ("ResolverStats", child->key) == 0)
1316 bind_config_set_bool ("ResolverStats", &tmp->resolver_stats, child);
1317 else if (strcasecmp ("CacheRRSets", child->key) == 0)
1318 bind_config_set_bool ("CacheRRSets", &tmp->cacherrsets, child);
1319 else if (strcasecmp ("Zone", child->key) == 0)
1320 bind_config_add_view_zone (tmp, child);
1321 else
1322 {
1323 WARNING ("bind plugin: Unknown configuration option "
1324 "`%s' in view `%s' will be ignored.", child->key, tmp->name);
1325 }
1326 } /* for (i = 0; i < ci->children_num; i++) */
1328 views_num++;
1329 return (0);
1330 } /* }}} int bind_config_add_view */
1332 static int bind_config (oconfig_item_t *ci) /* {{{ */
1333 {
1334 int i;
1336 for (i = 0; i < ci->children_num; i++)
1337 {
1338 oconfig_item_t *child = ci->children + i;
1340 if (strcasecmp ("Url", child->key) == 0) {
1341 if ((child->values_num != 1) || (child->values[0].type != OCONFIG_TYPE_STRING))
1342 {
1343 WARNING ("bind plugin: The `Url' option needs "
1344 "exactly one string argument.");
1345 return (-1);
1346 }
1348 url = strdup (child->values[0].value.string);
1349 } else if (strcasecmp ("OpCodes", child->key) == 0)
1350 bind_config_set_bool ("OpCodes", &global_opcodes, child);
1351 else if (strcasecmp ("QTypes", child->key) == 0)
1352 bind_config_set_bool ("QTypes", &global_qtypes, child);
1353 else if (strcasecmp ("ServerStats", child->key) == 0)
1354 bind_config_set_bool ("ServerStats", &global_server_stats, child);
1355 else if (strcasecmp ("ZoneMaintStats", child->key) == 0)
1356 bind_config_set_bool ("ZoneMaintStats", &global_zone_maint_stats, child);
1357 else if (strcasecmp ("ResolverStats", child->key) == 0)
1358 bind_config_set_bool ("ResolverStats", &global_resolver_stats, child);
1359 else if (strcasecmp ("MemoryStats", child->key) == 0)
1360 bind_config_set_bool ("MemoryStats", &global_memory_stats, child);
1361 else if (strcasecmp ("View", child->key) == 0)
1362 bind_config_add_view (child);
1363 else
1364 {
1365 WARNING ("bind plugin: Unknown configuration option "
1366 "`%s' will be ignored.", child->key);
1367 }
1368 }
1370 return (0);
1371 } /* }}} int bind_config */
1373 static int bind_init (void) /* {{{ */
1374 {
1375 if (curl != NULL)
1376 return (0);
1378 curl = curl_easy_init ();
1379 if (curl == NULL)
1380 {
1381 ERROR ("bind plugin: bind_init: curl_easy_init failed.");
1382 return (-1);
1383 }
1385 curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, bind_curl_callback);
1386 curl_easy_setopt (curl, CURLOPT_USERAGENT, PACKAGE_NAME"/"PACKAGE_VERSION);
1387 curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, bind_curl_error);
1388 curl_easy_setopt (curl, CURLOPT_URL, (url != NULL) ? url : BIND_DEFAULT_URL);
1389 curl_easy_setopt (curl, CURLOPT_FOLLOWLOCATION, 1);
1391 return (0);
1392 } /* }}} int bind_init */
1394 static int bind_read (void) /* {{{ */
1395 {
1396 int status;
1398 if (curl == NULL)
1399 {
1400 ERROR ("bind plugin: I don't have a CURL object.");
1401 return (-1);
1402 }
1404 bind_buffer_fill = 0;
1405 if (curl_easy_perform (curl) != 0)
1406 {
1407 ERROR ("bind plugin: curl_easy_perform failed: %s",
1408 bind_curl_error);
1409 return (-1);
1410 }
1412 status = bind_xml (bind_buffer);
1413 if (status != 0)
1414 return (-1);
1415 else
1416 return (0);
1417 } /* }}} int bind_read */
1419 static int bind_shutdown (void) /* {{{ */
1420 {
1421 if (curl != NULL)
1422 {
1423 curl_easy_cleanup (curl);
1424 curl = NULL;
1425 }
1427 return (0);
1428 } /* }}} int bind_shutdown */
1430 void module_register (void)
1431 {
1432 plugin_register_complex_config ("bind", bind_config);
1433 plugin_register_init ("bind", bind_init);
1434 plugin_register_read ("bind", bind_read);
1435 plugin_register_shutdown ("bind", bind_shutdown);
1436 } /* void module_register */
1438 /* vim: set sw=2 sts=2 ts=8 et fdm=marker : */