1 /**
2 * collectd - src/bind.c
3 * Copyright (C) 2009 Bruno Prémont
4 * Copyright (C) 2009,2010 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 collectd.org>
22 **/
24 #include "config.h"
26 #if STRPTIME_NEEDS_STANDARDS
27 # ifndef _ISOC99_SOURCE
28 # define _ISOC99_SOURCE 1
29 # endif
30 # ifndef _POSIX_C_SOURCE
31 # define _POSIX_C_SOURCE 200112L
32 # endif
33 # ifndef _XOPEN_SOURCE
34 # define _XOPEN_SOURCE 500
35 # endif
36 #endif /* STRPTIME_NEEDS_STANDARDS */
38 #include "collectd.h"
39 #include "common.h"
40 #include "plugin.h"
41 #include "configfile.h"
43 /* Some versions of libcurl don't include this themselves and then don't have
44 * fd_set available. */
45 #if HAVE_SYS_SELECT_H
46 # include <sys/select.h>
47 #endif
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 = TIME_T_TO_CDTIME_T (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_derive (xmlDoc *doc, xmlNode *node, /* {{{ */
349 derive_t *ret_value)
350 {
351 char *str_ptr;
352 value_t value;
353 int status;
355 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
356 if (str_ptr == NULL)
357 {
358 ERROR ("bind plugin: bind_xml_read_derive: xmlNodeListGetString failed.");
359 return (-1);
360 }
362 status = parse_value (str_ptr, &value, DS_TYPE_DERIVE);
363 if (status != 0)
364 {
365 ERROR ("bind plugin: Parsing string \"%s\" to derive value failed.",
366 str_ptr);
367 return (-1);
368 }
370 *ret_value = value.derive;
371 return (0);
372 } /* }}} int bind_xml_read_derive */
374 static int bind_xml_read_gauge (xmlDoc *doc, xmlNode *node, /* {{{ */
375 gauge_t *ret_value)
376 {
377 char *str_ptr, *end_ptr;
378 double value;
380 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
381 if (str_ptr == NULL)
382 {
383 ERROR ("bind plugin: bind_xml_read_gauge: xmlNodeListGetString failed.");
384 return (-1);
385 }
387 errno = 0;
388 value = strtod (str_ptr, &end_ptr);
389 xmlFree(str_ptr);
390 if (str_ptr == end_ptr || errno)
391 {
392 if (errno && (value < 0))
393 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed with underflow.");
394 else if (errno && (value > 0))
395 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed with overflow.");
396 else
397 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed.");
398 return (-1);
399 }
401 *ret_value = (gauge_t) value;
402 return (0);
403 } /* }}} int bind_xml_read_gauge */
405 static int bind_xml_read_timestamp (const char *xpath_expression, /* {{{ */
406 xmlDoc *doc, xmlXPathContext *xpathCtx, time_t *ret_value)
407 {
408 xmlXPathObject *xpathObj = NULL;
409 xmlNode *node;
410 char *str_ptr;
411 char *tmp;
412 struct tm tm;
414 xpathObj = xmlXPathEvalExpression (BAD_CAST xpath_expression, xpathCtx);
415 if (xpathObj == NULL)
416 {
417 ERROR ("bind plugin: Unable to evaluate XPath expression `%s'.",
418 xpath_expression);
419 return (-1);
420 }
422 if ((xpathObj->nodesetval == NULL) || (xpathObj->nodesetval->nodeNr < 1))
423 {
424 xmlXPathFreeObject (xpathObj);
425 return (-1);
426 }
428 if (xpathObj->nodesetval->nodeNr != 1)
429 {
430 NOTICE ("bind plugin: Evaluating the XPath expression `%s' returned "
431 "%i nodes. Only handling the first one.",
432 xpath_expression, xpathObj->nodesetval->nodeNr);
433 }
435 node = xpathObj->nodesetval->nodeTab[0];
437 if (node->xmlChildrenNode == NULL)
438 {
439 ERROR ("bind plugin: bind_xml_read_timestamp: "
440 "node->xmlChildrenNode == NULL");
441 xmlXPathFreeObject (xpathObj);
442 return (-1);
443 }
445 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
446 if (str_ptr == NULL)
447 {
448 ERROR ("bind plugin: bind_xml_read_timestamp: xmlNodeListGetString failed.");
449 xmlXPathFreeObject (xpathObj);
450 return (-1);
451 }
453 memset (&tm, 0, sizeof(tm));
454 tmp = strptime (str_ptr, "%Y-%m-%dT%T", &tm);
455 xmlFree(str_ptr);
456 if (tmp == NULL)
457 {
458 ERROR ("bind plugin: bind_xml_read_timestamp: strptime failed.");
459 xmlXPathFreeObject (xpathObj);
460 return (-1);
461 }
463 *ret_value = mktime(&tm);
465 xmlXPathFreeObject (xpathObj);
466 return (0);
467 } /* }}} int bind_xml_read_timestamp */
469 /*
470 * bind_parse_generic_name_value
471 *
472 * Reads statistics in the form:
473 * <foo>
474 * <name>QUERY</name>
475 * <counter>123</counter>
476 * </foo>
477 */
478 static int bind_parse_generic_name_value (const char *xpath_expression, /* {{{ */
479 list_callback_t list_callback,
480 void *user_data,
481 xmlDoc *doc, xmlXPathContext *xpathCtx,
482 time_t current_time, int ds_type)
483 {
484 xmlXPathObject *xpathObj = NULL;
485 int num_entries;
486 int i;
488 xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
489 if (xpathObj == NULL)
490 {
491 ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
492 xpath_expression);
493 return (-1);
494 }
496 num_entries = 0;
497 /* Iterate over all matching nodes. */
498 for (i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++)
499 {
500 xmlNode *name_node = NULL;
501 xmlNode *counter = NULL;
502 xmlNode *parent;
503 xmlNode *child;
505 parent = xpathObj->nodesetval->nodeTab[i];
506 DEBUG ("bind plugin: bind_parse_generic_name_value: parent->name = %s;",
507 (char *) parent->name);
509 /* Iterate over all child nodes. */
510 for (child = parent->xmlChildrenNode;
511 child != NULL;
512 child = child->next)
513 {
514 if (child->type != XML_ELEMENT_NODE)
515 continue;
517 if (xmlStrcmp (BAD_CAST "name", child->name) == 0)
518 name_node = child;
519 else if (xmlStrcmp (BAD_CAST "counter", child->name) == 0)
520 counter = child;
521 }
523 if ((name_node != NULL) && (counter != NULL))
524 {
525 char *name = (char *) xmlNodeListGetString (doc,
526 name_node->xmlChildrenNode, 1);
527 value_t value;
528 int status;
530 if (ds_type == DS_TYPE_GAUGE)
531 status = bind_xml_read_gauge (doc, counter, &value.gauge);
532 else
533 status = bind_xml_read_derive (doc, counter, &value.derive);
534 if (status != 0)
535 continue;
537 status = (*list_callback) (name, value, current_time, user_data);
538 if (status == 0)
539 num_entries++;
541 xmlFree (name);
542 }
543 }
545 DEBUG ("bind plugin: Found %d %s for XPath expression `%s'",
546 num_entries, (num_entries == 1) ? "entry" : "entries",
547 xpath_expression);
549 xmlXPathFreeObject(xpathObj);
551 return (0);
552 } /* }}} int bind_parse_generic_name_value */
554 /*
555 * bind_parse_generic_value_list
556 *
557 * Reads statistics in the form:
558 * <foo>
559 * <name0>123</name0>
560 * <name1>234</name1>
561 * <name2>345</name2>
562 * :
563 * </foo>
564 */
565 static int bind_parse_generic_value_list (const char *xpath_expression, /* {{{ */
566 list_callback_t list_callback,
567 void *user_data,
568 xmlDoc *doc, xmlXPathContext *xpathCtx,
569 time_t current_time, int ds_type)
570 {
571 xmlXPathObject *xpathObj = NULL;
572 int num_entries;
573 int i;
575 xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
576 if (xpathObj == NULL)
577 {
578 ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
579 xpath_expression);
580 return (-1);
581 }
583 num_entries = 0;
584 /* Iterate over all matching nodes. */
585 for (i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++)
586 {
587 xmlNode *child;
589 /* Iterate over all child nodes. */
590 for (child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode;
591 child != NULL;
592 child = child->next)
593 {
594 char *node_name;
595 value_t value;
596 int status;
598 if (child->type != XML_ELEMENT_NODE)
599 continue;
601 node_name = (char *) child->name;
603 if (ds_type == DS_TYPE_GAUGE)
604 status = bind_xml_read_gauge (doc, child, &value.gauge);
605 else
606 status = bind_xml_read_derive (doc, child, &value.derive);
607 if (status != 0)
608 continue;
610 status = (*list_callback) (node_name, value, current_time, user_data);
611 if (status == 0)
612 num_entries++;
613 }
614 }
616 DEBUG ("bind plugin: Found %d %s for XPath expression `%s'",
617 num_entries, (num_entries == 1) ? "entry" : "entries",
618 xpath_expression);
620 xmlXPathFreeObject(xpathObj);
622 return (0);
623 } /* }}} int bind_parse_generic_value_list */
625 static int bind_xml_stats_handle_zone (int version, xmlDoc *doc, /* {{{ */
626 xmlXPathContext *path_ctx, xmlNode *node, cb_view_t *view,
627 time_t current_time)
628 {
629 xmlXPathObject *path_obj;
630 char *zone_name = NULL;
631 int i;
632 size_t j;
634 path_obj = xmlXPathEvalExpression (BAD_CAST "name", path_ctx);
635 if (path_obj == NULL)
636 {
637 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
638 return (-1);
639 }
641 for (i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr); i++)
642 {
643 zone_name = (char *) xmlNodeListGetString (doc,
644 path_obj->nodesetval->nodeTab[i]->xmlChildrenNode, 1);
645 if (zone_name != NULL)
646 break;
647 }
649 if (zone_name == NULL)
650 {
651 ERROR ("bind plugin: Could not determine zone name.");
652 xmlXPathFreeObject (path_obj);
653 return (-1);
654 }
656 for (j = 0; j < view->zones_num; j++)
657 {
658 if (strcasecmp (zone_name, view->zones[j]) == 0)
659 break;
660 }
662 xmlFree (zone_name);
663 zone_name = NULL;
665 if (j >= views_num)
666 {
667 xmlXPathFreeObject (path_obj);
668 return (0);
669 }
671 zone_name = view->zones[j];
673 DEBUG ("bind plugin: bind_xml_stats_handle_zone: Found zone `%s'.",
674 zone_name);
676 { /* Parse the <counters> tag {{{ */
677 char plugin_instance[DATA_MAX_NAME_LEN];
678 translation_table_ptr_t table_ptr =
679 {
680 nsstats_translation_table,
681 nsstats_translation_table_length,
682 plugin_instance
683 };
685 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-zone-%s",
686 view->name, zone_name);
688 bind_parse_generic_value_list (/* xpath = */ "counters",
689 /* callback = */ bind_xml_table_callback,
690 /* user_data = */ &table_ptr,
691 doc, path_ctx, current_time, DS_TYPE_COUNTER);
692 } /* }}} */
694 xmlXPathFreeObject (path_obj);
696 return (0);
697 } /* }}} int bind_xml_stats_handle_zone */
699 static int bind_xml_stats_search_zones (int version, xmlDoc *doc, /* {{{ */
700 xmlXPathContext *path_ctx, xmlNode *node, cb_view_t *view,
701 time_t current_time)
702 {
703 xmlXPathObject *zone_nodes = NULL;
704 xmlXPathContext *zone_path_context;
705 int i;
707 zone_path_context = xmlXPathNewContext (doc);
708 if (zone_path_context == NULL)
709 {
710 ERROR ("bind plugin: xmlXPathNewContext failed.");
711 return (-1);
712 }
714 zone_nodes = xmlXPathEvalExpression (BAD_CAST "zones/zone", path_ctx);
715 if (zone_nodes == NULL)
716 {
717 ERROR ("bind plugin: Cannot find any <view> tags.");
718 xmlXPathFreeContext (zone_path_context);
719 return (-1);
720 }
722 for (i = 0; i < zone_nodes->nodesetval->nodeNr; i++)
723 {
724 xmlNode *node;
726 node = zone_nodes->nodesetval->nodeTab[i];
727 assert (node != NULL);
729 zone_path_context->node = node;
731 bind_xml_stats_handle_zone (version, doc, zone_path_context, node, view,
732 current_time);
733 }
735 xmlXPathFreeObject (zone_nodes);
736 xmlXPathFreeContext (zone_path_context);
737 return (0);
738 } /* }}} int bind_xml_stats_search_zones */
740 static int bind_xml_stats_handle_view (int version, xmlDoc *doc, /* {{{ */
741 xmlXPathContext *path_ctx, xmlNode *node, time_t current_time)
742 {
743 xmlXPathObject *path_obj;
744 char *view_name = NULL;
745 cb_view_t *view;
746 int i;
747 size_t j;
749 path_obj = xmlXPathEvalExpression (BAD_CAST "name", path_ctx);
750 if (path_obj == NULL)
751 {
752 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
753 return (-1);
754 }
756 for (i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr); i++)
757 {
758 view_name = (char *) xmlNodeListGetString (doc,
759 path_obj->nodesetval->nodeTab[i]->xmlChildrenNode, 1);
760 if (view_name != NULL)
761 break;
762 }
764 if (view_name == NULL)
765 {
766 ERROR ("bind plugin: Could not determine view name.");
767 xmlXPathFreeObject (path_obj);
768 return (-1);
769 }
771 for (j = 0; j < views_num; j++)
772 {
773 if (strcasecmp (view_name, views[j].name) == 0)
774 break;
775 }
777 xmlFree (view_name);
778 xmlXPathFreeObject (path_obj);
780 view_name = NULL;
781 path_obj = NULL;
783 if (j >= views_num)
784 return (0);
786 view = views + j;
788 DEBUG ("bind plugin: bind_xml_stats_handle_view: Found view `%s'.",
789 view->name);
791 if (view->qtypes != 0) /* {{{ */
792 {
793 char plugin_instance[DATA_MAX_NAME_LEN];
794 list_info_ptr_t list_info =
795 {
796 plugin_instance,
797 /* type = */ "dns_qtype"
798 };
800 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-qtypes",
801 view->name);
803 bind_parse_generic_name_value (/* xpath = */ "rdtype",
804 /* callback = */ bind_xml_list_callback,
805 /* user_data = */ &list_info,
806 doc, path_ctx, current_time, DS_TYPE_COUNTER);
807 } /* }}} */
809 if (view->resolver_stats != 0) /* {{{ */
810 {
811 char plugin_instance[DATA_MAX_NAME_LEN];
812 translation_table_ptr_t table_ptr =
813 {
814 resstats_translation_table,
815 resstats_translation_table_length,
816 plugin_instance
817 };
819 ssnprintf (plugin_instance, sizeof (plugin_instance),
820 "%s-resolver_stats", view->name);
822 bind_parse_generic_name_value ("resstat",
823 /* callback = */ bind_xml_table_callback,
824 /* user_data = */ &table_ptr,
825 doc, path_ctx, current_time, DS_TYPE_COUNTER);
826 } /* }}} */
828 /* Record types in the cache */
829 if (view->cacherrsets != 0) /* {{{ */
830 {
831 char plugin_instance[DATA_MAX_NAME_LEN];
832 list_info_ptr_t list_info =
833 {
834 plugin_instance,
835 /* type = */ "dns_qtype_cached"
836 };
838 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-cache_rr_sets",
839 view->name);
841 bind_parse_generic_name_value (/* xpath = */ "cache/rrset",
842 /* callback = */ bind_xml_list_callback,
843 /* user_data = */ &list_info,
844 doc, path_ctx, current_time, DS_TYPE_GAUGE);
845 } /* }}} */
847 if (view->zones_num > 0)
848 bind_xml_stats_search_zones (version, doc, path_ctx, node, view,
849 current_time);
851 return (0);
852 } /* }}} int bind_xml_stats_handle_view */
854 static int bind_xml_stats_search_views (int version, xmlDoc *doc, /* {{{ */
855 xmlXPathContext *xpathCtx, xmlNode *statsnode, time_t current_time)
856 {
857 xmlXPathObject *view_nodes = NULL;
858 xmlXPathContext *view_path_context;
859 int i;
861 view_path_context = xmlXPathNewContext (doc);
862 if (view_path_context == NULL)
863 {
864 ERROR ("bind plugin: xmlXPathNewContext failed.");
865 return (-1);
866 }
868 view_nodes = xmlXPathEvalExpression (BAD_CAST "views/view", xpathCtx);
869 if (view_nodes == NULL)
870 {
871 ERROR ("bind plugin: Cannot find any <view> tags.");
872 xmlXPathFreeContext (view_path_context);
873 return (-1);
874 }
876 for (i = 0; i < view_nodes->nodesetval->nodeNr; i++)
877 {
878 xmlNode *node;
880 node = view_nodes->nodesetval->nodeTab[i];
881 assert (node != NULL);
883 view_path_context->node = node;
885 bind_xml_stats_handle_view (version, doc, view_path_context, node,
886 current_time);
887 }
889 xmlXPathFreeObject (view_nodes);
890 xmlXPathFreeContext (view_path_context);
891 return (0);
892 } /* }}} int bind_xml_stats_search_views */
894 static int bind_xml_stats (int version, xmlDoc *doc, /* {{{ */
895 xmlXPathContext *xpathCtx, xmlNode *statsnode)
896 {
897 time_t current_time = 0;
898 int status;
900 xpathCtx->node = statsnode;
902 /* TODO: Check `server/boot-time' to recognize server restarts. */
904 status = bind_xml_read_timestamp ("server/current-time",
905 doc, xpathCtx, ¤t_time);
906 if (status != 0)
907 {
908 ERROR ("bind plugin: Reading `server/current-time' failed.");
909 return (-1);
910 }
911 DEBUG ("bind plugin: Current server time is %i.", (int) current_time);
913 /* XPath: server/requests/opcode
914 * Variables: QUERY, IQUERY, NOTIFY, UPDATE, ...
915 * Layout:
916 * <opcode>
917 * <name>A</name>
918 * <counter>1</counter>
919 * </opcode>
920 * :
921 */
922 if (global_opcodes != 0)
923 {
924 list_info_ptr_t list_info =
925 {
926 /* plugin instance = */ "global-opcodes",
927 /* type = */ "dns_opcode"
928 };
930 bind_parse_generic_name_value (/* xpath = */ "server/requests/opcode",
931 /* callback = */ bind_xml_list_callback,
932 /* user_data = */ &list_info,
933 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
934 }
936 /* XPath: server/queries-in/rdtype
937 * Variables: RESERVED0, A, NS, CNAME, SOA, MR, PTR, HINFO, MX, TXT, RP,
938 * X25, PX, AAAA, LOC, SRV, NAPTR, A6, DS, RRSIG, NSEC, DNSKEY,
939 * SPF, TKEY, IXFR, AXFR, ANY, ..., Others
940 * Layout:
941 * <rdtype>
942 * <name>A</name>
943 * <counter>1</counter>
944 * </rdtype>
945 * :
946 */
947 if (global_qtypes != 0)
948 {
949 list_info_ptr_t list_info =
950 {
951 /* plugin instance = */ "global-qtypes",
952 /* type = */ "dns_qtype"
953 };
955 bind_parse_generic_name_value (/* xpath = */ "server/queries-in/rdtype",
956 /* callback = */ bind_xml_list_callback,
957 /* user_data = */ &list_info,
958 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
959 }
961 /* XPath: server/nsstats, server/nsstat
962 * Variables: Requestv4, Requestv6, ReqEdns0, ReqBadEDNSVer, ReqTSIG,
963 * ReqSIG0, ReqBadSIG, ReqTCP, AuthQryRej, RecQryRej, XfrRej,
964 * UpdateRej, Response, TruncatedResp, RespEDNS0, RespTSIG,
965 * RespSIG0, QrySuccess, QryAuthAns, QryNoauthAns, QryReferral,
966 * QryNxrrset, QrySERVFAIL, QryFORMERR, QryNXDOMAIN, QryRecursion,
967 * QryDuplicate, QryDropped, QryFailure, XfrReqDone, UpdateReqFwd,
968 * UpdateRespFwd, UpdateFwdFail, UpdateDone, UpdateFail,
969 * UpdateBadPrereq
970 * Layout v1:
971 * <nsstats>
972 * <Requestv4>1</Requestv4>
973 * <Requestv6>0</Requestv6>
974 * :
975 * </nsstats>
976 * Layout v2:
977 * <nsstat>
978 * <name>Requestv4</name>
979 * <counter>1</counter>
980 * </nsstat>
981 * <nsstat>
982 * <name>Requestv6</name>
983 * <counter>0</counter>
984 * </nsstat>
985 * :
986 */
987 if (global_server_stats)
988 {
989 translation_table_ptr_t table_ptr =
990 {
991 nsstats_translation_table,
992 nsstats_translation_table_length,
993 /* plugin_instance = */ "global-server_stats"
994 };
996 if (version == 1)
997 {
998 bind_parse_generic_value_list ("server/nsstats",
999 /* callback = */ bind_xml_table_callback,
1000 /* user_data = */ &table_ptr,
1001 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1002 }
1003 else
1004 {
1005 bind_parse_generic_name_value ("server/nsstat",
1006 /* callback = */ bind_xml_table_callback,
1007 /* user_data = */ &table_ptr,
1008 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1009 }
1010 }
1012 /* XPath: server/zonestats, server/zonestat
1013 * Variables: NotifyOutv4, NotifyOutv6, NotifyInv4, NotifyInv6, NotifyRej,
1014 * SOAOutv4, SOAOutv6, AXFRReqv4, AXFRReqv6, IXFRReqv4, IXFRReqv6,
1015 * XfrSuccess, XfrFail
1016 * Layout v1:
1017 * <zonestats>
1018 * <NotifyOutv4>0</NotifyOutv4>
1019 * <NotifyOutv6>0</NotifyOutv6>
1020 * :
1021 * </zonestats>
1022 * Layout v2:
1023 * <zonestat>
1024 * <name>NotifyOutv4</name>
1025 * <counter>0</counter>
1026 * </zonestat>
1027 * <zonestat>
1028 * <name>NotifyOutv6</name>
1029 * <counter>0</counter>
1030 * </zonestat>
1031 * :
1032 */
1033 if (global_zone_maint_stats)
1034 {
1035 translation_table_ptr_t table_ptr =
1036 {
1037 zonestats_translation_table,
1038 zonestats_translation_table_length,
1039 /* plugin_instance = */ "global-zone_maint_stats"
1040 };
1042 if (version == 1)
1043 {
1044 bind_parse_generic_value_list ("server/zonestats",
1045 /* callback = */ bind_xml_table_callback,
1046 /* user_data = */ &table_ptr,
1047 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1048 }
1049 else
1050 {
1051 bind_parse_generic_name_value ("server/zonestat",
1052 /* callback = */ bind_xml_table_callback,
1053 /* user_data = */ &table_ptr,
1054 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1055 }
1056 }
1058 /* XPath: server/resstats
1059 * Variables: Queryv4, Queryv6, Responsev4, Responsev6, NXDOMAIN, SERVFAIL,
1060 * FORMERR, OtherError, EDNS0Fail, Mismatch, Truncated, Lame,
1061 * Retry, GlueFetchv4, GlueFetchv6, GlueFetchv4Fail,
1062 * GlueFetchv6Fail, ValAttempt, ValOk, ValNegOk, ValFail
1063 * Layout v1:
1064 * <resstats>
1065 * <Queryv4>0</Queryv4>
1066 * <Queryv6>0</Queryv6>
1067 * :
1068 * </resstats>
1069 * Layout v2:
1070 * <resstat>
1071 * <name>Queryv4</name>
1072 * <counter>0</counter>
1073 * </resstat>
1074 * <resstat>
1075 * <name>Queryv6</name>
1076 * <counter>0</counter>
1077 * </resstat>
1078 * :
1079 */
1080 if (global_resolver_stats != 0)
1081 {
1082 translation_table_ptr_t table_ptr =
1083 {
1084 resstats_translation_table,
1085 resstats_translation_table_length,
1086 /* plugin_instance = */ "global-resolver_stats"
1087 };
1089 if (version == 1)
1090 {
1091 bind_parse_generic_value_list ("server/resstats",
1092 /* callback = */ bind_xml_table_callback,
1093 /* user_data = */ &table_ptr,
1094 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1095 }
1096 else
1097 {
1098 bind_parse_generic_name_value ("server/resstat",
1099 /* callback = */ bind_xml_table_callback,
1100 /* user_data = */ &table_ptr,
1101 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1102 }
1103 }
1105 /* XPath: memory/summary
1106 * Variables: TotalUse, InUse, BlockSize, ContextSize, Lost
1107 * Layout: v2:
1108 * <summary>
1109 * <TotalUse>6587096</TotalUse>
1110 * <InUse>1345424</InUse>
1111 * <BlockSize>5505024</BlockSize>
1112 * <ContextSize>3732456</ContextSize>
1113 * <Lost>0</Lost>
1114 * </summary>
1115 */
1116 if (global_memory_stats != 0)
1117 {
1118 translation_table_ptr_t table_ptr =
1119 {
1120 memsummary_translation_table,
1121 memsummary_translation_table_length,
1122 /* plugin_instance = */ "global-memory_stats"
1123 };
1125 bind_parse_generic_value_list ("memory/summary",
1126 /* callback = */ bind_xml_table_callback,
1127 /* user_data = */ &table_ptr,
1128 doc, xpathCtx, current_time, DS_TYPE_GAUGE);
1129 }
1131 if (views_num > 0)
1132 bind_xml_stats_search_views (version, doc, xpathCtx, statsnode,
1133 current_time);
1135 return 0;
1136 } /* }}} int bind_xml_stats */
1138 static int bind_xml (const char *data) /* {{{ */
1139 {
1140 xmlDoc *doc = NULL;
1141 xmlXPathContext *xpathCtx = NULL;
1142 xmlXPathObject *xpathObj = NULL;
1143 int ret = -1;
1144 int i;
1146 doc = xmlParseMemory (data, strlen (data));
1147 if (doc == NULL)
1148 {
1149 ERROR ("bind plugin: xmlParseMemory failed.");
1150 return (-1);
1151 }
1153 xpathCtx = xmlXPathNewContext (doc);
1154 if (xpathCtx == NULL)
1155 {
1156 ERROR ("bind plugin: xmlXPathNewContext failed.");
1157 xmlFreeDoc (doc);
1158 return (-1);
1159 }
1161 xpathObj = xmlXPathEvalExpression (BAD_CAST "/isc/bind/statistics", xpathCtx);
1162 if (xpathObj == NULL)
1163 {
1164 ERROR ("bind plugin: Cannot find the <statistics> tag.");
1165 xmlXPathFreeContext (xpathCtx);
1166 xmlFreeDoc (doc);
1167 return (-1);
1168 }
1169 else if (xpathObj->nodesetval == NULL)
1170 {
1171 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
1172 xmlXPathFreeObject (xpathObj);
1173 xmlXPathFreeContext (xpathCtx);
1174 xmlFreeDoc (doc);
1175 return (-1);
1176 }
1178 for (i = 0; i < xpathObj->nodesetval->nodeNr; i++)
1179 {
1180 xmlNode *node;
1181 char *attr_version;
1182 int parsed_version = 0;
1184 node = xpathObj->nodesetval->nodeTab[i];
1185 assert (node != NULL);
1187 attr_version = (char *) xmlGetProp (node, BAD_CAST "version");
1188 if (attr_version == NULL)
1189 {
1190 NOTICE ("bind plugin: Found <statistics> tag doesn't have a "
1191 "`version' attribute.");
1192 continue;
1193 }
1194 DEBUG ("bind plugin: Found: <statistics version=\"%s\">", attr_version);
1196 /* At the time this plugin was written, version "1.0" was used by
1197 * BIND 9.5.0, version "2.0" was used by BIND 9.5.1 and 9.6.0. We assume
1198 * that "1.*" and "2.*" don't introduce structural changes, so we just
1199 * check for the first two characters here. */
1200 if (strncmp ("1.", attr_version, strlen ("1.")) == 0)
1201 parsed_version = 1;
1202 else if (strncmp ("2.", attr_version, strlen ("2.")) == 0)
1203 parsed_version = 2;
1204 else
1205 {
1206 /* TODO: Use the complaint mechanism here. */
1207 NOTICE ("bind plugin: Found <statistics> tag with version `%s'. "
1208 "Unfortunately I have no clue how to parse that. "
1209 "Please open a bug report for this.", attr_version);
1210 xmlFree (attr_version);
1211 continue;
1212 }
1214 ret = bind_xml_stats (parsed_version,
1215 doc, xpathCtx, node);
1217 xmlFree (attr_version);
1218 /* One <statistics> node ought to be enough. */
1219 break;
1220 }
1222 xmlXPathFreeObject (xpathObj);
1223 xmlXPathFreeContext (xpathCtx);
1224 xmlFreeDoc (doc);
1226 return (ret);
1227 } /* }}} int bind_xml */
1229 static int bind_config_set_bool (const char *name, int *var, /* {{{ */
1230 oconfig_item_t *ci)
1231 {
1232 if ((ci->values_num != 1) || ( ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
1233 {
1234 WARNING ("bind plugin: The `%s' option needs "
1235 "exactly one boolean argument.", name);
1236 return (-1);
1237 }
1239 if (ci->values[0].value.boolean)
1240 *var = 1;
1241 else
1242 *var = 0;
1243 return 0;
1244 } /* }}} int bind_config_set_bool */
1246 static int bind_config_add_view_zone (cb_view_t *view, /* {{{ */
1247 oconfig_item_t *ci)
1248 {
1249 char **tmp;
1251 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1252 {
1253 WARNING ("bind plugin: The `Zone' option needs "
1254 "exactly one string argument.");
1255 return (-1);
1256 }
1258 tmp = (char **) realloc (view->zones,
1259 sizeof (char *) * (view->zones_num + 1));
1260 if (tmp == NULL)
1261 {
1262 ERROR ("bind plugin: realloc failed.");
1263 return (-1);
1264 }
1265 view->zones = tmp;
1267 view->zones[view->zones_num] = strdup (ci->values[0].value.string);
1268 if (view->zones[view->zones_num] == NULL)
1269 {
1270 ERROR ("bind plugin: strdup failed.");
1271 return (-1);
1272 }
1273 view->zones_num++;
1275 return (0);
1276 } /* }}} int bind_config_add_view_zone */
1278 static int bind_config_add_view (oconfig_item_t *ci) /* {{{ */
1279 {
1280 cb_view_t *tmp;
1281 int i;
1283 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1284 {
1285 WARNING ("bind plugin: `View' blocks need exactly one string argument.");
1286 return (-1);
1287 }
1289 tmp = (cb_view_t *) realloc (views, sizeof (*views) * (views_num + 1));
1290 if (tmp == NULL)
1291 {
1292 ERROR ("bind plugin: realloc failed.");
1293 return (-1);
1294 }
1295 views = tmp;
1296 tmp = views + views_num;
1298 memset (tmp, 0, sizeof (*tmp));
1299 tmp->qtypes = 1;
1300 tmp->resolver_stats = 1;
1301 tmp->cacherrsets = 1;
1302 tmp->zones = NULL;
1303 tmp->zones_num = 0;
1305 tmp->name = strdup (ci->values[0].value.string);
1306 if (tmp->name == NULL)
1307 {
1308 ERROR ("bind plugin: strdup failed.");
1309 free (tmp);
1310 return (-1);
1311 }
1313 for (i = 0; i < ci->children_num; i++)
1314 {
1315 oconfig_item_t *child = ci->children + i;
1317 if (strcasecmp ("QTypes", child->key) == 0)
1318 bind_config_set_bool ("QTypes", &tmp->qtypes, child);
1319 else if (strcasecmp ("ResolverStats", child->key) == 0)
1320 bind_config_set_bool ("ResolverStats", &tmp->resolver_stats, child);
1321 else if (strcasecmp ("CacheRRSets", child->key) == 0)
1322 bind_config_set_bool ("CacheRRSets", &tmp->cacherrsets, child);
1323 else if (strcasecmp ("Zone", child->key) == 0)
1324 bind_config_add_view_zone (tmp, child);
1325 else
1326 {
1327 WARNING ("bind plugin: Unknown configuration option "
1328 "`%s' in view `%s' will be ignored.", child->key, tmp->name);
1329 }
1330 } /* for (i = 0; i < ci->children_num; i++) */
1332 views_num++;
1333 return (0);
1334 } /* }}} int bind_config_add_view */
1336 static int bind_config (oconfig_item_t *ci) /* {{{ */
1337 {
1338 int i;
1340 for (i = 0; i < ci->children_num; i++)
1341 {
1342 oconfig_item_t *child = ci->children + i;
1344 if (strcasecmp ("Url", child->key) == 0) {
1345 if ((child->values_num != 1) || (child->values[0].type != OCONFIG_TYPE_STRING))
1346 {
1347 WARNING ("bind plugin: The `Url' option needs "
1348 "exactly one string argument.");
1349 return (-1);
1350 }
1352 url = strdup (child->values[0].value.string);
1353 } else if (strcasecmp ("OpCodes", child->key) == 0)
1354 bind_config_set_bool ("OpCodes", &global_opcodes, child);
1355 else if (strcasecmp ("QTypes", child->key) == 0)
1356 bind_config_set_bool ("QTypes", &global_qtypes, child);
1357 else if (strcasecmp ("ServerStats", child->key) == 0)
1358 bind_config_set_bool ("ServerStats", &global_server_stats, child);
1359 else if (strcasecmp ("ZoneMaintStats", child->key) == 0)
1360 bind_config_set_bool ("ZoneMaintStats", &global_zone_maint_stats, child);
1361 else if (strcasecmp ("ResolverStats", child->key) == 0)
1362 bind_config_set_bool ("ResolverStats", &global_resolver_stats, child);
1363 else if (strcasecmp ("MemoryStats", child->key) == 0)
1364 bind_config_set_bool ("MemoryStats", &global_memory_stats, child);
1365 else if (strcasecmp ("View", child->key) == 0)
1366 bind_config_add_view (child);
1367 else
1368 {
1369 WARNING ("bind plugin: Unknown configuration option "
1370 "`%s' will be ignored.", child->key);
1371 }
1372 }
1374 return (0);
1375 } /* }}} int bind_config */
1377 static int bind_init (void) /* {{{ */
1378 {
1379 if (curl != NULL)
1380 return (0);
1382 curl = curl_easy_init ();
1383 if (curl == NULL)
1384 {
1385 ERROR ("bind plugin: bind_init: curl_easy_init failed.");
1386 return (-1);
1387 }
1389 curl_easy_setopt (curl, CURLOPT_NOSIGNAL, 1);
1390 curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, bind_curl_callback);
1391 curl_easy_setopt (curl, CURLOPT_USERAGENT, PACKAGE_NAME"/"PACKAGE_VERSION);
1392 curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, bind_curl_error);
1393 curl_easy_setopt (curl, CURLOPT_URL, (url != NULL) ? url : BIND_DEFAULT_URL);
1394 curl_easy_setopt (curl, CURLOPT_FOLLOWLOCATION, 1);
1396 return (0);
1397 } /* }}} int bind_init */
1399 static int bind_read (void) /* {{{ */
1400 {
1401 int status;
1403 if (curl == NULL)
1404 {
1405 ERROR ("bind plugin: I don't have a CURL object.");
1406 return (-1);
1407 }
1409 bind_buffer_fill = 0;
1410 if (curl_easy_perform (curl) != 0)
1411 {
1412 ERROR ("bind plugin: curl_easy_perform failed: %s",
1413 bind_curl_error);
1414 return (-1);
1415 }
1417 status = bind_xml (bind_buffer);
1418 if (status != 0)
1419 return (-1);
1420 else
1421 return (0);
1422 } /* }}} int bind_read */
1424 static int bind_shutdown (void) /* {{{ */
1425 {
1426 if (curl != NULL)
1427 {
1428 curl_easy_cleanup (curl);
1429 curl = NULL;
1430 }
1432 return (0);
1433 } /* }}} int bind_shutdown */
1435 void module_register (void)
1436 {
1437 plugin_register_complex_config ("bind", bind_config);
1438 plugin_register_init ("bind", bind_init);
1439 plugin_register_read ("bind", bind_read);
1440 plugin_register_shutdown ("bind", bind_shutdown);
1441 } /* void module_register */
1443 /* vim: set sw=2 sts=2 ts=8 et fdm=marker : */