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 /* Set to C99 and POSIX code */
25 #ifndef _ISOC99_SOURCE
26 # define _ISOC99_SOURCE
27 #endif
28 #ifndef _POSIX_SOURCE
29 # define _POSIX_SOURCE
30 #endif
31 #ifndef _POSIX_C_SOURCE
32 # define _POSIX_C_SOURCE 200112L
33 #endif
34 #ifndef _REENTRANT
35 # define _REENTRANT
36 #endif
37 #ifndef _XOPEN_SOURCE
38 # define _XOPEN_SOURCE 600
39 #endif
40 #ifndef _BSD_SOURCE
41 # define _BSD_SOURCE
42 #endif
44 #include "collectd.h"
45 #include "common.h"
46 #include "plugin.h"
47 #include "configfile.h"
49 #include <curl/curl.h>
50 #include <libxml/parser.h>
51 #include <libxml/xpath.h>
53 #ifndef BIND_DEFAULT_URL
54 # define BIND_DEFAULT_URL "http://localhost:8053/"
55 #endif
57 /*
58 * Some types used for the callback functions. `translation_table_ptr_t' and
59 * `list_info_ptr_t' are passed to the callbacks in the `void *user_data'
60 * pointer.
61 */
62 typedef int (*list_callback_t) (const char *name, value_t value,
63 time_t current_time, void *user_data);
65 struct cb_view_s
66 {
67 char *name;
69 int qtypes;
70 int resolver_stats;
71 int cacherrsets;
73 char **zones;
74 size_t zones_num;
75 };
76 typedef struct cb_view_s cb_view_t;
78 struct translation_info_s
79 {
80 const char *xml_name;
81 const char *type;
82 const char *type_instance;
83 };
84 typedef struct translation_info_s translation_info_t;
86 struct translation_table_ptr_s
87 {
88 const translation_info_t *table;
89 size_t table_length;
90 const char *plugin_instance;
91 };
92 typedef struct translation_table_ptr_s translation_table_ptr_t;
94 struct list_info_ptr_s
95 {
96 const char *plugin_instance;
97 const char *type;
98 };
99 typedef struct list_info_ptr_s list_info_ptr_t;
101 static char *url = NULL;
102 static int global_opcodes = 1;
103 static int global_qtypes = 1;
104 static int global_server_stats = 1;
105 static int global_zone_maint_stats = 1;
106 static int global_resolver_stats = 0;
107 static int global_memory_stats = 1;
109 static cb_view_t *views = NULL;
110 static size_t views_num = 0;
112 static CURL *curl = NULL;
114 static char *bind_buffer = NULL;
115 static size_t bind_buffer_size = 0;
116 static size_t bind_buffer_fill = 0;
117 static char bind_curl_error[CURL_ERROR_SIZE];
119 /* Translation table for the `nsstats' values. */
120 static const translation_info_t nsstats_translation_table[] = /* {{{ */
121 {
122 /* Requests */
123 { "Requestv4", "dns_request", "IPv4" },
124 { "Requestv6", "dns_request", "IPv6" },
125 { "ReqEdns0", "dns_request", "EDNS0" },
126 { "ReqBadEDNSVer", "dns_request", "BadEDNSVer" },
127 { "ReqTSIG", "dns_request", "TSIG" },
128 { "ReqSIG0", "dns_request", "SIG0" },
129 { "ReqBadSIG", "dns_request", "BadSIG" },
130 { "ReqTCP", "dns_request", "TCP" },
131 /* Rejects */
132 { "AuthQryRej", "dns_reject", "authorative" },
133 { "RecQryRej", "dns_reject", "recursive" },
134 { "XfrRej", "dns_reject", "transfer" },
135 { "UpdateRej", "dns_reject", "update" },
136 /* Responses */
137 { "Response", "dns_response", "normal" },
138 { "TruncatedResp", "dns_response", "truncated" },
139 { "RespEDNS0", "dns_response", "EDNS0" },
140 { "RespTSIG", "dns_response", "TSIG" },
141 { "RespSIG0", "dns_response", "SIG0" },
142 /* Queries */
143 { "QryAuthAns", "dns_query", "authorative" },
144 { "QryNoauthAns", "dns_query", "nonauth" },
145 { "QryReferral", "dns_query", "referral" },
146 { "QryRecursion", "dns_query", "recursion" },
147 { "QryDuplicate", "dns_query", "dupliate" },
148 { "QryDropped", "dns_query", "dropped" },
149 { "QryFailure", "dns_query", "failure" },
150 /* Response codes */
151 { "QrySuccess", "dns_rcode", "tx-NOERROR" },
152 { "QryNxrrset", "dns_rcode", "tx-NXRRSET" },
153 { "QrySERVFAIL", "dns_rcode", "tx-SERVFAIL" },
154 { "QryFORMERR", "dns_rcode", "tx-FORMERR" },
155 { "QryNXDOMAIN", "dns_rcode", "tx-NXDOMAIN" }
156 #if 0
157 { "XfrReqDone", "type", "type_instance" },
158 { "UpdateReqFwd", "type", "type_instance" },
159 { "UpdateRespFwd", "type", "type_instance" },
160 { "UpdateFwdFail", "type", "type_instance" },
161 { "UpdateDone", "type", "type_instance" },
162 { "UpdateFail", "type", "type_instance" },
163 { "UpdateBadPrereq", "type", "type_instance" },
164 #endif
165 };
166 static int nsstats_translation_table_length =
167 STATIC_ARRAY_SIZE (nsstats_translation_table);
168 /* }}} */
170 /* Translation table for the `zonestats' values. */
171 static const translation_info_t zonestats_translation_table[] = /* {{{ */
172 {
173 /* Notify's */
174 { "NotifyOutv4", "dns_notify", "tx-IPv4" },
175 { "NotifyOutv6", "dns_notify", "tx-IPv6" },
176 { "NotifyInv4", "dns_notify", "rx-IPv4" },
177 { "NotifyInv6", "dns_notify", "rx-IPv6" },
178 { "NotifyRej", "dns_notify", "rejected" },
179 /* SOA/AXFS/IXFS requests */
180 { "SOAOutv4", "dns_opcode", "SOA-IPv4" },
181 { "SOAOutv6", "dns_opcode", "SOA-IPv6" },
182 { "AXFRReqv4", "dns_opcode", "AXFR-IPv4" },
183 { "AXFRReqv6", "dns_opcode", "AXFR-IPv6" },
184 { "IXFRReqv4", "dns_opcode", "IXFR-IPv4" },
185 { "IXFRReqv6", "dns_opcode", "IXFR-IPv6" },
186 /* Domain transfers */
187 { "XfrSuccess", "dns_transfer", "success" },
188 { "XfrFail", "dns_transfer", "failure" }
189 };
190 static int zonestats_translation_table_length =
191 STATIC_ARRAY_SIZE (zonestats_translation_table);
192 /* }}} */
194 /* Translation table for the `resstats' values. */
195 static const translation_info_t resstats_translation_table[] = /* {{{ */
196 {
197 /* Generic resolver information */
198 { "Queryv4", "dns_query", "IPv4" },
199 { "Queryv6", "dns_query", "IPv6" },
200 { "Responsev4", "dns_response", "IPv4" },
201 { "Responsev6", "dns_response", "IPv6" },
202 /* Received response codes */
203 { "NXDOMAIN", "dns_rcode", "rx-NXDOMAIN" },
204 { "SERVFAIL", "dns_rcode", "rx-SERVFAIL" },
205 { "FORMERR", "dns_rcode", "rx-FORMERR" },
206 { "OtherError", "dns_rcode", "rx-OTHER" },
207 { "EDNS0Fail", "dns_rcode", "rx-EDNS0Fail"},
208 /* Received responses */
209 { "Mismatch", "dns_response", "mismatch" },
210 { "Truncated", "dns_response", "truncated" },
211 { "Lame", "dns_response", "lame" },
212 { "Retry", "dns_query", "retry" },
213 #if 0
214 { "GlueFetchv4", "type", "type_instance" },
215 { "GlueFetchv6", "type", "type_instance" },
216 { "GlueFetchv4Fail", "type", "type_instance" },
217 { "GlueFetchv6Fail", "type", "type_instance" },
218 #endif
219 /* DNSSEC information */
220 { "ValAttempt", "dns_resolver", "DNSSEC-attempt" },
221 { "ValOk", "dns_resolver", "DNSSEC-okay" },
222 { "ValNegOk", "dns_resolver", "DNSSEC-negokay" },
223 { "ValFail", "dns_resolver", "DNSSEC-fail" }
224 };
225 static int resstats_translation_table_length =
226 STATIC_ARRAY_SIZE (resstats_translation_table);
227 /* }}} */
229 /* Translation table for the `memory/summary' values. */
230 static const translation_info_t memsummary_translation_table[] = /* {{{ */
231 {
232 { "TotalUse", "memory", "TotalUse" },
233 { "InUse", "memory", "InUse" },
234 { "BlockSize", "memory", "BlockSize" },
235 { "ContextSize", "memory", "ContextSize" },
236 { "Lost", "memory", "Lost" }
237 };
238 static int memsummary_translation_table_length =
239 STATIC_ARRAY_SIZE (memsummary_translation_table);
240 /* }}} */
242 static void submit (time_t ts, const char *plugin_instance, /* {{{ */
243 const char *type, const char *type_instance, value_t value)
244 {
245 value_t values[1];
246 value_list_t vl = VALUE_LIST_INIT;
248 values[0] = value;
250 vl.values = values;
251 vl.values_len = 1;
252 vl.time = ts;
253 sstrncpy(vl.host, hostname_g, sizeof(vl.host));
254 sstrncpy(vl.plugin, "bind", sizeof(vl.plugin));
255 if (plugin_instance) {
256 sstrncpy(vl.plugin_instance, plugin_instance,
257 sizeof(vl.plugin_instance));
258 replace_special (vl.plugin_instance, sizeof (vl.plugin_instance));
259 }
260 sstrncpy(vl.type, type, sizeof(vl.type));
261 if (type_instance) {
262 sstrncpy(vl.type_instance, type_instance,
263 sizeof(vl.type_instance));
264 replace_special (vl.plugin_instance, sizeof (vl.plugin_instance));
265 }
266 plugin_dispatch_values(&vl);
267 } /* }}} void submit */
269 static size_t bind_curl_callback (void *buf, size_t size, /* {{{ */
270 size_t nmemb, void __attribute__((unused)) *stream)
271 {
272 size_t len = size * nmemb;
274 if (len <= 0)
275 return (len);
277 if ((bind_buffer_fill + len) >= bind_buffer_size)
278 {
279 char *temp;
281 temp = realloc(bind_buffer, bind_buffer_fill + len + 1);
282 if (temp == NULL)
283 {
284 ERROR ("bind plugin: realloc failed.");
285 return (0);
286 }
287 bind_buffer = temp;
288 bind_buffer_size = bind_buffer_fill + len + 1;
289 }
291 memcpy (bind_buffer + bind_buffer_fill, (char *) buf, len);
292 bind_buffer_fill += len;
293 bind_buffer[bind_buffer_fill] = 0;
295 return (len);
296 } /* }}} size_t bind_curl_callback */
298 /*
299 * Callback, that's called with a translation table.
300 * (Plugin instance is fixed, type and type instance come from lookup table.)
301 */
302 static int bind_xml_table_callback (const char *name, value_t value, /* {{{ */
303 time_t current_time, void *user_data)
304 {
305 translation_table_ptr_t *table = (translation_table_ptr_t *) user_data;
306 size_t i;
308 if (table == NULL)
309 return (-1);
311 for (i = 0; i < table->table_length; i++)
312 {
313 if (strcmp (table->table[i].xml_name, name) != 0)
314 continue;
316 submit (current_time,
317 table->plugin_instance,
318 table->table[i].type,
319 table->table[i].type_instance,
320 value);
321 break;
322 }
324 return (0);
325 } /* }}} int bind_xml_table_callback */
327 /*
328 * Callback, that's used for lists.
329 * (Plugin instance and type are fixed, xml name is used as type instance.)
330 */
331 static int bind_xml_list_callback (const char *name, /* {{{ */
332 value_t value, time_t current_time, void *user_data)
333 {
334 list_info_ptr_t *list_info = (list_info_ptr_t *) user_data;
336 if (list_info == NULL)
337 return (-1);
339 submit (current_time,
340 list_info->plugin_instance,
341 list_info->type,
342 /* type instance = */ name,
343 value);
345 return (0);
346 } /* }}} int bind_xml_list_callback */
348 static int bind_xml_read_counter (xmlDoc *doc, xmlNode *node, /* {{{ */
349 counter_t *ret_value)
350 {
351 char *str_ptr, *end_ptr;
352 long long int value;
354 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
355 if (str_ptr == NULL)
356 {
357 ERROR ("bind plugin: bind_xml_read_counter: xmlNodeListGetString failed.");
358 return (-1);
359 }
361 errno = 0;
362 value = strtoll (str_ptr, &end_ptr, 10);
363 xmlFree(str_ptr);
364 if (str_ptr == end_ptr || errno)
365 {
366 if (errno && (value < 0))
367 ERROR ("bind plugin: bind_xml_read_counter: strtoll failed with underflow.");
368 else if (errno && (value > 0))
369 ERROR ("bind plugin: bind_xml_read_counter: strtoll failed with overflow.");
370 else
371 ERROR ("bind plugin: bind_xml_read_counter: strtoll failed.");
372 return (-1);
373 }
375 *ret_value = value;
376 return (0);
377 } /* }}} int bind_xml_read_counter */
379 static int bind_xml_read_gauge (xmlDoc *doc, xmlNode *node, /* {{{ */
380 gauge_t *ret_value)
381 {
382 char *str_ptr, *end_ptr;
383 double value;
385 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
386 if (str_ptr == NULL)
387 {
388 ERROR ("bind plugin: bind_xml_read_gauge: xmlNodeListGetString failed.");
389 return (-1);
390 }
392 errno = 0;
393 value = strtod (str_ptr, &end_ptr);
394 xmlFree(str_ptr);
395 if (str_ptr == end_ptr || errno)
396 {
397 if (errno && (value < 0))
398 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed with underflow.");
399 else if (errno && (value > 0))
400 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed with overflow.");
401 else
402 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed.");
403 return (-1);
404 }
406 *ret_value = (gauge_t) value;
407 return (0);
408 } /* }}} int bind_xml_read_gauge */
410 static int bind_xml_read_timestamp (const char *xpath_expression, /* {{{ */
411 xmlDoc *doc, xmlXPathContext *xpathCtx, time_t *ret_value)
412 {
413 xmlXPathObject *xpathObj = NULL;
414 xmlNode *node;
415 char *str_ptr;
416 char *tmp;
417 struct tm tm;
419 xpathObj = xmlXPathEvalExpression (BAD_CAST xpath_expression, xpathCtx);
420 if (xpathObj == NULL)
421 {
422 ERROR ("bind plugin: Unable to evaluate XPath expression `%s'.",
423 xpath_expression);
424 return (-1);
425 }
427 if ((xpathObj->nodesetval == NULL) || (xpathObj->nodesetval->nodeNr < 1))
428 {
429 xmlXPathFreeObject (xpathObj);
430 return (-1);
431 }
433 if (xpathObj->nodesetval->nodeNr != 1)
434 {
435 NOTICE ("bind plugin: Evaluating the XPath expression `%s' returned "
436 "%i nodes. Only handling the first one.",
437 xpath_expression, xpathObj->nodesetval->nodeNr);
438 }
440 node = xpathObj->nodesetval->nodeTab[0];
442 if (node->xmlChildrenNode == NULL)
443 {
444 ERROR ("bind plugin: bind_xml_read_timestamp: "
445 "node->xmlChildrenNode == NULL");
446 xmlXPathFreeObject (xpathObj);
447 return (-1);
448 }
450 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
451 if (str_ptr == NULL)
452 {
453 ERROR ("bind plugin: bind_xml_read_timestamp: xmlNodeListGetString failed.");
454 xmlXPathFreeObject (xpathObj);
455 return (-1);
456 }
458 memset (&tm, 0, sizeof(tm));
459 tmp = strptime (str_ptr, "%Y-%m-%dT%T", &tm);
460 xmlFree(str_ptr);
461 if (tmp == NULL)
462 {
463 ERROR ("bind plugin: bind_xml_read_timestamp: strptime failed.");
464 xmlXPathFreeObject (xpathObj);
465 return (-1);
466 }
468 *ret_value = timegm(&tm);
470 xmlXPathFreeObject (xpathObj);
471 return (0);
472 } /* }}} int bind_xml_read_timestamp */
474 /*
475 * bind_parse_generic_name_value
476 *
477 * Reads statistics in the form:
478 * <foo>
479 * <name>QUERY</name>
480 * <counter>123</counter>
481 * </foo>
482 */
483 static int bind_parse_generic_name_value (const char *xpath_expression, /* {{{ */
484 list_callback_t list_callback,
485 void *user_data,
486 xmlDoc *doc, xmlXPathContext *xpathCtx,
487 time_t current_time, int ds_type)
488 {
489 xmlXPathObject *xpathObj = NULL;
490 int num_entries;
491 int i;
493 xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
494 if (xpathObj == NULL)
495 {
496 ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
497 xpath_expression);
498 return (-1);
499 }
501 num_entries = 0;
502 /* Iterate over all matching nodes. */
503 for (i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++)
504 {
505 xmlNode *name_node = NULL;
506 xmlNode *counter = NULL;
507 xmlNode *parent;
508 xmlNode *child;
510 parent = xpathObj->nodesetval->nodeTab[i];
511 DEBUG ("bind plugin: bind_parse_generic_name_value: parent->name = %s;",
512 (char *) parent->name);
514 /* Iterate over all child nodes. */
515 for (child = parent->xmlChildrenNode;
516 child != NULL;
517 child = child->next)
518 {
519 if (child->type != XML_ELEMENT_NODE)
520 continue;
522 if (xmlStrcmp (BAD_CAST "name", child->name) == 0)
523 name_node = child;
524 else if (xmlStrcmp (BAD_CAST "counter", child->name) == 0)
525 counter = child;
526 }
528 if ((name_node != NULL) && (counter != NULL))
529 {
530 char *name = (char *) xmlNodeListGetString (doc,
531 name_node->xmlChildrenNode, 1);
532 value_t value;
533 int status;
535 if (ds_type == DS_TYPE_GAUGE)
536 status = bind_xml_read_gauge (doc, counter, &value.gauge);
537 else
538 status = bind_xml_read_counter (doc, counter, &value.counter);
539 if (status != 0)
540 continue;
542 status = (*list_callback) (name, value, current_time, user_data);
543 if (status == 0)
544 num_entries++;
546 xmlFree (name);
547 }
548 }
550 DEBUG ("bind plugin: Found %d %s for XPath expression `%s'",
551 num_entries, (num_entries == 1) ? "entry" : "entries",
552 xpath_expression);
554 xmlXPathFreeObject(xpathObj);
556 return (0);
557 } /* }}} int bind_parse_generic_name_value */
559 /*
560 * bind_parse_generic_value_list
561 *
562 * Reads statistics in the form:
563 * <foo>
564 * <name0>123</name0>
565 * <name1>234</name1>
566 * <name2>345</name2>
567 * :
568 * </foo>
569 */
570 static int bind_parse_generic_value_list (const char *xpath_expression, /* {{{ */
571 list_callback_t list_callback,
572 void *user_data,
573 xmlDoc *doc, xmlXPathContext *xpathCtx,
574 time_t current_time, int ds_type)
575 {
576 xmlXPathObject *xpathObj = NULL;
577 int num_entries;
578 int i;
580 xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
581 if (xpathObj == NULL)
582 {
583 ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
584 xpath_expression);
585 return (-1);
586 }
588 num_entries = 0;
589 /* Iterate over all matching nodes. */
590 for (i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++)
591 {
592 xmlNode *child;
594 /* Iterate over all child nodes. */
595 for (child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode;
596 child != NULL;
597 child = child->next)
598 {
599 char *node_name;
600 value_t value;
601 int status;
603 if (child->type != XML_ELEMENT_NODE)
604 continue;
606 node_name = (char *) child->name;
608 if (ds_type == DS_TYPE_GAUGE)
609 status = bind_xml_read_gauge (doc, child, &value.gauge);
610 else
611 status = bind_xml_read_counter (doc, child, &value.counter);
612 if (status != 0)
613 continue;
615 status = (*list_callback) (node_name, value, current_time, user_data);
616 if (status == 0)
617 num_entries++;
618 }
619 }
621 DEBUG ("bind plugin: Found %d %s for XPath expression `%s'",
622 num_entries, (num_entries == 1) ? "entry" : "entries",
623 xpath_expression);
625 xmlXPathFreeObject(xpathObj);
627 return (0);
628 } /* }}} int bind_parse_generic_value_list */
630 static int bind_xml_stats_handle_zone (int version, xmlDoc *doc, /* {{{ */
631 xmlXPathContext *path_ctx, xmlNode *node, cb_view_t *view,
632 time_t current_time)
633 {
634 xmlXPathObject *path_obj;
635 char *zone_name = NULL;
636 int i;
637 size_t j;
639 path_obj = xmlXPathEvalExpression (BAD_CAST "name", path_ctx);
640 if (path_obj == NULL)
641 {
642 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
643 return (-1);
644 }
646 for (i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr); i++)
647 {
648 zone_name = (char *) xmlNodeListGetString (doc,
649 path_obj->nodesetval->nodeTab[i]->xmlChildrenNode, 1);
650 if (zone_name != NULL)
651 break;
652 }
654 if (zone_name == NULL)
655 {
656 ERROR ("bind plugin: Could not determine zone name.");
657 xmlXPathFreeObject (path_obj);
658 return (-1);
659 }
661 for (j = 0; j < view->zones_num; j++)
662 {
663 if (strcasecmp (zone_name, view->zones[j]) == 0)
664 break;
665 }
667 xmlFree (zone_name);
668 zone_name = NULL;
670 if (j >= views_num)
671 {
672 xmlXPathFreeObject (path_obj);
673 return (0);
674 }
676 zone_name = view->zones[j];
678 DEBUG ("bind plugin: bind_xml_stats_handle_zone: Found zone `%s'.",
679 zone_name);
681 { /* Parse the <counters> tag {{{ */
682 char plugin_instance[DATA_MAX_NAME_LEN];
683 translation_table_ptr_t table_ptr =
684 {
685 nsstats_translation_table,
686 nsstats_translation_table_length,
687 plugin_instance
688 };
690 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-zone-%s",
691 view->name, zone_name);
693 bind_parse_generic_value_list (/* xpath = */ "counters",
694 /* callback = */ bind_xml_table_callback,
695 /* user_data = */ &table_ptr,
696 doc, path_ctx, current_time, DS_TYPE_COUNTER);
697 } /* }}} */
699 xmlXPathFreeObject (path_obj);
701 return (0);
702 } /* }}} int bind_xml_stats_handle_zone */
704 static int bind_xml_stats_search_zones (int version, xmlDoc *doc, /* {{{ */
705 xmlXPathContext *path_ctx, xmlNode *node, cb_view_t *view,
706 time_t current_time)
707 {
708 xmlXPathObject *zone_nodes = NULL;
709 xmlXPathContext *zone_path_context;
710 int i;
712 zone_path_context = xmlXPathNewContext (doc);
713 if (zone_path_context == NULL)
714 {
715 ERROR ("bind plugin: xmlXPathNewContext failed.");
716 return (-1);
717 }
719 zone_nodes = xmlXPathEvalExpression (BAD_CAST "zones/zone", path_ctx);
720 if (zone_nodes == NULL)
721 {
722 ERROR ("bind plugin: Cannot find any <view> tags.");
723 xmlXPathFreeContext (zone_path_context);
724 return (-1);
725 }
727 for (i = 0; i < zone_nodes->nodesetval->nodeNr; i++)
728 {
729 xmlNode *node;
731 node = zone_nodes->nodesetval->nodeTab[i];
732 assert (node != NULL);
734 zone_path_context->node = node;
736 bind_xml_stats_handle_zone (version, doc, zone_path_context, node, view,
737 current_time);
738 }
740 xmlXPathFreeObject (zone_nodes);
741 xmlXPathFreeContext (zone_path_context);
742 return (0);
743 } /* }}} int bind_xml_stats_search_zones */
745 static int bind_xml_stats_handle_view (int version, xmlDoc *doc, /* {{{ */
746 xmlXPathContext *path_ctx, xmlNode *node, time_t current_time)
747 {
748 xmlXPathObject *path_obj;
749 char *view_name = NULL;
750 cb_view_t *view;
751 int i;
752 size_t j;
754 path_obj = xmlXPathEvalExpression (BAD_CAST "name", path_ctx);
755 if (path_obj == NULL)
756 {
757 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
758 return (-1);
759 }
761 for (i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr); i++)
762 {
763 view_name = (char *) xmlNodeListGetString (doc,
764 path_obj->nodesetval->nodeTab[i]->xmlChildrenNode, 1);
765 if (view_name != NULL)
766 break;
767 }
769 if (view_name == NULL)
770 {
771 ERROR ("bind plugin: Could not determine view name.");
772 xmlXPathFreeObject (path_obj);
773 return (-1);
774 }
776 for (j = 0; j < views_num; j++)
777 {
778 if (strcasecmp (view_name, views[j].name) == 0)
779 break;
780 }
782 xmlFree (view_name);
783 xmlXPathFreeObject (path_obj);
785 view_name = NULL;
786 path_obj = NULL;
788 if (j >= views_num)
789 return (0);
791 view = views + j;
793 DEBUG ("bind plugin: bind_xml_stats_handle_view: Found view `%s'.",
794 view->name);
796 if (view->qtypes != 0) /* {{{ */
797 {
798 char plugin_instance[DATA_MAX_NAME_LEN];
799 list_info_ptr_t list_info =
800 {
801 plugin_instance,
802 /* type = */ "dns_qtype_gauge"
803 };
805 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-qtypes",
806 view->name);
808 bind_parse_generic_name_value (/* xpath = */ "rdtype",
809 /* callback = */ bind_xml_list_callback,
810 /* user_data = */ &list_info,
811 doc, path_ctx, current_time, DS_TYPE_COUNTER);
812 } /* }}} */
814 if (view->resolver_stats != 0) /* {{{ */
815 {
816 char plugin_instance[DATA_MAX_NAME_LEN];
817 translation_table_ptr_t table_ptr =
818 {
819 resstats_translation_table,
820 resstats_translation_table_length,
821 plugin_instance
822 };
824 ssnprintf (plugin_instance, sizeof (plugin_instance),
825 "%s-resolver_stats", view->name);
827 bind_parse_generic_name_value ("resstat",
828 /* callback = */ bind_xml_table_callback,
829 /* user_data = */ &table_ptr,
830 doc, path_ctx, current_time, DS_TYPE_COUNTER);
831 } /* }}} */
833 if (view->cacherrsets != 0) /* {{{ */
834 {
835 char plugin_instance[DATA_MAX_NAME_LEN];
836 list_info_ptr_t list_info =
837 {
838 plugin_instance,
839 /* type = */ "dns_qtype_gauge"
840 };
842 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-cache_rr_sets",
843 view->name);
845 bind_parse_generic_name_value (/* xpath = */ "cache/rrset",
846 /* callback = */ bind_xml_list_callback,
847 /* user_data = */ &list_info,
848 doc, path_ctx, current_time, DS_TYPE_GAUGE);
849 } /* }}} */
851 if (view->zones_num > 0)
852 bind_xml_stats_search_zones (version, doc, path_ctx, node, view,
853 current_time);
855 return (0);
856 } /* }}} int bind_xml_stats_handle_view */
858 static int bind_xml_stats_search_views (int version, xmlDoc *doc, /* {{{ */
859 xmlXPathContext *xpathCtx, xmlNode *statsnode, time_t current_time)
860 {
861 xmlXPathObject *view_nodes = NULL;
862 xmlXPathContext *view_path_context;
863 int i;
865 view_path_context = xmlXPathNewContext (doc);
866 if (view_path_context == NULL)
867 {
868 ERROR ("bind plugin: xmlXPathNewContext failed.");
869 return (-1);
870 }
872 view_nodes = xmlXPathEvalExpression (BAD_CAST "views/view", xpathCtx);
873 if (view_nodes == NULL)
874 {
875 ERROR ("bind plugin: Cannot find any <view> tags.");
876 xmlXPathFreeContext (view_path_context);
877 return (-1);
878 }
880 for (i = 0; i < view_nodes->nodesetval->nodeNr; i++)
881 {
882 xmlNode *node;
884 node = view_nodes->nodesetval->nodeTab[i];
885 assert (node != NULL);
887 view_path_context->node = node;
889 bind_xml_stats_handle_view (version, doc, view_path_context, node,
890 current_time);
891 }
893 xmlXPathFreeObject (view_nodes);
894 xmlXPathFreeContext (view_path_context);
895 return (0);
896 } /* }}} int bind_xml_stats_search_views */
898 static int bind_xml_stats (int version, xmlDoc *doc, /* {{{ */
899 xmlXPathContext *xpathCtx, xmlNode *statsnode)
900 {
901 time_t current_time = 0;
902 int status;
904 xpathCtx->node = statsnode;
906 /* TODO: Check `server/boot-time' to recognize server restarts. */
908 status = bind_xml_read_timestamp ("server/current-time",
909 doc, xpathCtx, ¤t_time);
910 if (status != 0)
911 {
912 ERROR ("bind plugin: Reading `server/current-time' failed.");
913 return (-1);
914 }
915 DEBUG ("bind plugin: Current server time is %i.", (int) current_time);
917 /* XPath: server/requests/opcode
918 * Variables: QUERY, IQUERY, NOTIFY, UPDATE, ...
919 * Layout:
920 * <opcode>
921 * <name>A</name>
922 * <counter>1</counter>
923 * </opcode>
924 * :
925 */
926 if (global_opcodes != 0)
927 {
928 list_info_ptr_t list_info =
929 {
930 /* plugin instance = */ "global-opcodes",
931 /* type = */ "dns_opcode"
932 };
934 bind_parse_generic_name_value (/* xpath = */ "server/requests/opcode",
935 /* callback = */ bind_xml_list_callback,
936 /* user_data = */ &list_info,
937 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
938 }
940 /* XPath: server/queries-in/rdtype
941 * Variables: RESERVED0, A, NS, CNAME, SOA, MR, PTR, HINFO, MX, TXT, RP,
942 * X25, PX, AAAA, LOC, SRV, NAPTR, A6, DS, RRSIG, NSEC, DNSKEY,
943 * SPF, TKEY, IXFR, AXFR, ANY, ..., Others
944 * Layout:
945 * <rdtype>
946 * <name>A</name>
947 * <counter>1</counter>
948 * </rdtype>
949 * :
950 */
951 if (global_qtypes != 0)
952 {
953 list_info_ptr_t list_info =
954 {
955 /* plugin instance = */ "global-qtypes",
956 /* type = */ "dns_qtype"
957 };
959 bind_parse_generic_name_value (/* xpath = */ "server/queries-in/rdtype",
960 /* callback = */ bind_xml_list_callback,
961 /* user_data = */ &list_info,
962 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
963 }
965 /* XPath: server/nsstats, server/nsstat
966 * Variables: Requestv4, Requestv6, ReqEdns0, ReqBadEDNSVer, ReqTSIG,
967 * ReqSIG0, ReqBadSIG, ReqTCP, AuthQryRej, RecQryRej, XfrRej,
968 * UpdateRej, Response, TruncatedResp, RespEDNS0, RespTSIG,
969 * RespSIG0, QrySuccess, QryAuthAns, QryNoauthAns, QryReferral,
970 * QryNxrrset, QrySERVFAIL, QryFORMERR, QryNXDOMAIN, QryRecursion,
971 * QryDuplicate, QryDropped, QryFailure, XfrReqDone, UpdateReqFwd,
972 * UpdateRespFwd, UpdateFwdFail, UpdateDone, UpdateFail,
973 * UpdateBadPrereq
974 * Layout v1:
975 * <nsstats>
976 * <Requestv4>1</Requestv4>
977 * <Requestv6>0</Requestv6>
978 * :
979 * </nsstats>
980 * Layout v2:
981 * <nsstat>
982 * <name>Requestv4</name>
983 * <counter>1</counter>
984 * </nsstat>
985 * <nsstat>
986 * <name>Requestv6</name>
987 * <counter>0</counter>
988 * </nsstat>
989 * :
990 */
991 if (global_server_stats)
992 {
993 translation_table_ptr_t table_ptr =
994 {
995 nsstats_translation_table,
996 nsstats_translation_table_length,
997 /* plugin_instance = */ "global-server_stats"
998 };
1000 if (version == 1)
1001 {
1002 bind_parse_generic_value_list ("server/nsstats",
1003 /* callback = */ bind_xml_table_callback,
1004 /* user_data = */ &table_ptr,
1005 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1006 }
1007 else
1008 {
1009 bind_parse_generic_name_value ("server/nsstat",
1010 /* callback = */ bind_xml_table_callback,
1011 /* user_data = */ &table_ptr,
1012 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1013 }
1014 }
1016 /* XPath: server/zonestats, server/zonestat
1017 * Variables: NotifyOutv4, NotifyOutv6, NotifyInv4, NotifyInv6, NotifyRej,
1018 * SOAOutv4, SOAOutv6, AXFRReqv4, AXFRReqv6, IXFRReqv4, IXFRReqv6,
1019 * XfrSuccess, XfrFail
1020 * Layout v1:
1021 * <zonestats>
1022 * <NotifyOutv4>0</NotifyOutv4>
1023 * <NotifyOutv6>0</NotifyOutv6>
1024 * :
1025 * </zonestats>
1026 * Layout v2:
1027 * <zonestat>
1028 * <name>NotifyOutv4</name>
1029 * <counter>0</counter>
1030 * </zonestat>
1031 * <zonestat>
1032 * <name>NotifyOutv6</name>
1033 * <counter>0</counter>
1034 * </zonestat>
1035 * :
1036 */
1037 if (global_zone_maint_stats)
1038 {
1039 translation_table_ptr_t table_ptr =
1040 {
1041 zonestats_translation_table,
1042 zonestats_translation_table_length,
1043 /* plugin_instance = */ "global-zone_maint_stats"
1044 };
1046 if (version == 1)
1047 {
1048 bind_parse_generic_value_list ("server/zonestats",
1049 /* callback = */ bind_xml_table_callback,
1050 /* user_data = */ &table_ptr,
1051 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1052 }
1053 else
1054 {
1055 bind_parse_generic_name_value ("server/zonestat",
1056 /* callback = */ bind_xml_table_callback,
1057 /* user_data = */ &table_ptr,
1058 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1059 }
1060 }
1062 /* XPath: server/resstats
1063 * Variables: Queryv4, Queryv6, Responsev4, Responsev6, NXDOMAIN, SERVFAIL,
1064 * FORMERR, OtherError, EDNS0Fail, Mismatch, Truncated, Lame,
1065 * Retry, GlueFetchv4, GlueFetchv6, GlueFetchv4Fail,
1066 * GlueFetchv6Fail, ValAttempt, ValOk, ValNegOk, ValFail
1067 * Layout v1:
1068 * <resstats>
1069 * <Queryv4>0</Queryv4>
1070 * <Queryv6>0</Queryv6>
1071 * :
1072 * </resstats>
1073 * Layout v2:
1074 * <resstat>
1075 * <name>Queryv4</name>
1076 * <counter>0</counter>
1077 * </resstat>
1078 * <resstat>
1079 * <name>Queryv6</name>
1080 * <counter>0</counter>
1081 * </resstat>
1082 * :
1083 */
1084 if (global_resolver_stats != 0)
1085 {
1086 translation_table_ptr_t table_ptr =
1087 {
1088 resstats_translation_table,
1089 resstats_translation_table_length,
1090 /* plugin_instance = */ "global-resolver_stats"
1091 };
1093 if (version == 1)
1094 {
1095 bind_parse_generic_value_list ("server/resstats",
1096 /* callback = */ bind_xml_table_callback,
1097 /* user_data = */ &table_ptr,
1098 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1099 }
1100 else
1101 {
1102 bind_parse_generic_name_value ("server/resstat",
1103 /* callback = */ bind_xml_table_callback,
1104 /* user_data = */ &table_ptr,
1105 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1106 }
1107 }
1109 /* XPath: memory/summary
1110 * Variables: TotalUse, InUse, BlockSize, ContextSize, Lost
1111 * Layout: v2:
1112 * <summary>
1113 * <TotalUse>6587096</TotalUse>
1114 * <InUse>1345424</InUse>
1115 * <BlockSize>5505024</BlockSize>
1116 * <ContextSize>3732456</ContextSize>
1117 * <Lost>0</Lost>
1118 * </summary>
1119 */
1120 if (global_memory_stats != 0)
1121 {
1122 translation_table_ptr_t table_ptr =
1123 {
1124 memsummary_translation_table,
1125 memsummary_translation_table_length,
1126 /* plugin_instance = */ "global-memory_stats"
1127 };
1129 bind_parse_generic_value_list ("memory/summary",
1130 /* callback = */ bind_xml_table_callback,
1131 /* user_data = */ &table_ptr,
1132 doc, xpathCtx, current_time, DS_TYPE_GAUGE);
1133 }
1135 if (views_num > 0)
1136 bind_xml_stats_search_views (version, doc, xpathCtx, statsnode,
1137 current_time);
1139 return 0;
1140 } /* }}} int bind_xml_stats */
1142 static int bind_xml (const char *data) /* {{{ */
1143 {
1144 xmlDoc *doc = NULL;
1145 xmlXPathContext *xpathCtx = NULL;
1146 xmlXPathObject *xpathObj = NULL;
1147 int ret = -1;
1148 int i;
1150 doc = xmlParseMemory (data, strlen (data));
1151 if (doc == NULL)
1152 {
1153 ERROR ("bind plugin: xmlParseMemory failed.");
1154 return (-1);
1155 }
1157 xpathCtx = xmlXPathNewContext (doc);
1158 if (xpathCtx == NULL)
1159 {
1160 ERROR ("bind plugin: xmlXPathNewContext failed.");
1161 xmlFreeDoc (doc);
1162 return (-1);
1163 }
1165 xpathObj = xmlXPathEvalExpression (BAD_CAST "/isc/bind/statistics", xpathCtx);
1166 if (xpathObj == NULL)
1167 {
1168 ERROR ("bind plugin: Cannot find the <statistics> tag.");
1169 xmlXPathFreeContext (xpathCtx);
1170 xmlFreeDoc (doc);
1171 return (-1);
1172 }
1173 else if (xpathObj->nodesetval == NULL)
1174 {
1175 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
1176 xmlXPathFreeObject (xpathObj);
1177 xmlXPathFreeContext (xpathCtx);
1178 xmlFreeDoc (doc);
1179 return (-1);
1180 }
1182 for (i = 0; i < xpathObj->nodesetval->nodeNr; i++)
1183 {
1184 xmlNode *node;
1185 char *attr_version;
1186 int parsed_version = 0;
1188 node = xpathObj->nodesetval->nodeTab[i];
1189 assert (node != NULL);
1191 attr_version = (char *) xmlGetProp (node, BAD_CAST "version");
1192 if (attr_version == NULL)
1193 {
1194 NOTICE ("bind plugin: Found <statistics> tag doesn't have a "
1195 "`version' attribute.");
1196 continue;
1197 }
1198 DEBUG ("bind plugin: Found: <statistics version=\"%s\">", attr_version);
1200 /* At the time this plugin was written, version "1.0" was used by
1201 * BIND 9.5.0, version "2.0" was used by BIND 9.5.1 and 9.6.0. We assume
1202 * that "1.*" and "2.*" don't introduce structural changes, so we just
1203 * check for the first two characters here. */
1204 if (strncmp ("1.", attr_version, strlen ("1.")) == 0)
1205 parsed_version = 1;
1206 else if (strncmp ("2.", attr_version, strlen ("2.")) == 0)
1207 parsed_version = 2;
1208 else
1209 {
1210 /* TODO: Use the complaint mechanism here. */
1211 NOTICE ("bind plugin: Found <statistics> tag with version `%s'. "
1212 "Unfortunately I have no clue how to parse that. "
1213 "Please open a bug report for this.", attr_version);
1214 xmlFree (attr_version);
1215 continue;
1216 }
1218 ret = bind_xml_stats (parsed_version,
1219 doc, xpathCtx, node);
1221 xmlFree (attr_version);
1222 /* One <statistics> node ought to be enough. */
1223 break;
1224 }
1226 xmlXPathFreeObject (xpathObj);
1227 xmlXPathFreeContext (xpathCtx);
1228 xmlFreeDoc (doc);
1230 return (ret);
1231 } /* }}} int bind_xml */
1233 static int bind_config_set_bool (const char *name, int *var, /* {{{ */
1234 oconfig_item_t *ci)
1235 {
1236 if ((ci->values_num != 1) || ( ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
1237 {
1238 WARNING ("bind plugin: The `%s' option needs "
1239 "exactly one boolean argument.", name);
1240 return (-1);
1241 }
1243 if (ci->values[0].value.boolean)
1244 *var = 1;
1245 else
1246 *var = 0;
1247 return 0;
1248 } /* }}} int bind_config_set_bool */
1250 static int bind_config_add_view_zone (cb_view_t *view, /* {{{ */
1251 oconfig_item_t *ci)
1252 {
1253 char **tmp;
1255 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1256 {
1257 WARNING ("bind plugin: The `Zone' option needs "
1258 "exactly one string argument.");
1259 return (-1);
1260 }
1262 tmp = (char **) realloc (view->zones,
1263 sizeof (char *) * (view->zones_num + 1));
1264 if (tmp == NULL)
1265 {
1266 ERROR ("bind plugin: realloc failed.");
1267 return (-1);
1268 }
1269 view->zones = tmp;
1271 view->zones[view->zones_num] = strdup (ci->values[0].value.string);
1272 if (view->zones[view->zones_num] == NULL)
1273 {
1274 ERROR ("bind plugin: strdup failed.");
1275 return (-1);
1276 }
1277 view->zones_num++;
1279 return (0);
1280 } /* }}} int bind_config_add_view_zone */
1282 static int bind_config_add_view (oconfig_item_t *ci) /* {{{ */
1283 {
1284 cb_view_t *tmp;
1285 int i;
1287 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1288 {
1289 WARNING ("bind plugin: `View' blocks need exactly one string argument.");
1290 return (-1);
1291 }
1293 tmp = (cb_view_t *) realloc (views, sizeof (*views) * (views_num + 1));
1294 if (tmp == NULL)
1295 {
1296 ERROR ("bind plugin: realloc failed.");
1297 return (-1);
1298 }
1299 views = tmp;
1300 tmp = views + views_num;
1302 memset (tmp, 0, sizeof (*tmp));
1303 tmp->qtypes = 1;
1304 tmp->resolver_stats = 1;
1305 tmp->cacherrsets = 1;
1306 tmp->zones = NULL;
1307 tmp->zones_num = 0;
1309 tmp->name = strdup (ci->values[0].value.string);
1310 if (tmp->name == NULL)
1311 {
1312 ERROR ("bind plugin: strdup failed.");
1313 free (tmp);
1314 return (-1);
1315 }
1317 for (i = 0; i < ci->children_num; i++)
1318 {
1319 oconfig_item_t *child = ci->children + i;
1321 if (strcasecmp ("QTypes", child->key) == 0)
1322 bind_config_set_bool ("QTypes", &tmp->qtypes, child);
1323 else if (strcasecmp ("ResolverStats", child->key) == 0)
1324 bind_config_set_bool ("ResolverStats", &tmp->resolver_stats, child);
1325 else if (strcasecmp ("CacheRRSets", child->key) == 0)
1326 bind_config_set_bool ("CacheRRSets", &tmp->cacherrsets, child);
1327 else if (strcasecmp ("Zone", child->key) == 0)
1328 bind_config_add_view_zone (tmp, child);
1329 else
1330 {
1331 WARNING ("bind plugin: Unknown configuration option "
1332 "`%s' in view `%s' will be ignored.", child->key, tmp->name);
1333 }
1334 } /* for (i = 0; i < ci->children_num; i++) */
1336 views_num++;
1337 return (0);
1338 } /* }}} int bind_config_add_view */
1340 static int bind_config (oconfig_item_t *ci) /* {{{ */
1341 {
1342 int i;
1344 for (i = 0; i < ci->children_num; i++)
1345 {
1346 oconfig_item_t *child = ci->children + i;
1348 if (strcasecmp ("Url", child->key) == 0) {
1349 if ((child->values_num != 1) || (child->values[0].type != OCONFIG_TYPE_STRING))
1350 {
1351 WARNING ("bind plugin: The `Url' option needs "
1352 "exactly one string argument.");
1353 return (-1);
1354 }
1356 url = strdup (child->values[0].value.string);
1357 } else if (strcasecmp ("OpCodes", child->key) == 0)
1358 bind_config_set_bool ("OpCodes", &global_opcodes, child);
1359 else if (strcasecmp ("QTypes", child->key) == 0)
1360 bind_config_set_bool ("QTypes", &global_qtypes, child);
1361 else if (strcasecmp ("ServerStats", child->key) == 0)
1362 bind_config_set_bool ("ServerStats", &global_server_stats, child);
1363 else if (strcasecmp ("ZoneMaintStats", child->key) == 0)
1364 bind_config_set_bool ("ZoneMaintStats", &global_zone_maint_stats, child);
1365 else if (strcasecmp ("ResolverStats", child->key) == 0)
1366 bind_config_set_bool ("ResolverStats", &global_resolver_stats, child);
1367 else if (strcasecmp ("MemoryStats", child->key) == 0)
1368 bind_config_set_bool ("MemoryStats", &global_memory_stats, child);
1369 else if (strcasecmp ("View", child->key) == 0)
1370 bind_config_add_view (child);
1371 else
1372 {
1373 WARNING ("bind plugin: Unknown configuration option "
1374 "`%s' will be ignored.", child->key);
1375 }
1376 }
1378 return (0);
1379 } /* }}} int bind_config */
1381 static int bind_init (void) /* {{{ */
1382 {
1383 if (curl != NULL)
1384 return (0);
1386 curl = curl_easy_init ();
1387 if (curl == NULL)
1388 {
1389 ERROR ("bind plugin: bind_init: curl_easy_init failed.");
1390 return (-1);
1391 }
1393 curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, bind_curl_callback);
1394 curl_easy_setopt (curl, CURLOPT_USERAGENT, PACKAGE_NAME"/"PACKAGE_VERSION);
1395 curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, bind_curl_error);
1396 curl_easy_setopt (curl, CURLOPT_URL, (url != NULL) ? url : BIND_DEFAULT_URL);
1398 return (0);
1399 } /* }}} int bind_init */
1401 static int bind_read (void) /* {{{ */
1402 {
1403 int status;
1405 if (curl == NULL)
1406 {
1407 ERROR ("bind plugin: I don't have a CURL object.");
1408 return (-1);
1409 }
1411 bind_buffer_fill = 0;
1412 if (curl_easy_perform (curl) != 0)
1413 {
1414 ERROR ("bind plugin: curl_easy_perform failed: %s",
1415 bind_curl_error);
1416 return (-1);
1417 }
1419 status = bind_xml (bind_buffer);
1420 if (status != 0)
1421 return (-1);
1422 else
1423 return (0);
1424 } /* }}} int bind_read */
1426 static int bind_shutdown (void) /* {{{ */
1427 {
1428 if (curl != NULL)
1429 {
1430 curl_easy_cleanup (curl);
1431 curl = NULL;
1432 }
1434 return (0);
1435 } /* }}} int bind_shutdown */
1437 void module_register (void)
1438 {
1439 plugin_register_complex_config ("bind", bind_config);
1440 plugin_register_init ("bind", bind_init);
1441 plugin_register_read ("bind", bind_read);
1442 plugin_register_shutdown ("bind", bind_shutdown);
1443 } /* void module_register */
1445 /* vim: set sw=2 sts=2 ts=8 et fdm=marker : */