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", "transer" },
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 remove_special (char *buffer, size_t buffer_size) /* {{{ */
243 {
244 size_t i;
246 for (i = 0; i < buffer_size; i++)
247 {
248 if (buffer[i] == 0)
249 return;
250 if ((!isalnum ((int) buffer[i])) && (buffer[i] != '-'))
251 buffer[i] = '_';
252 }
253 } /* }}} void remove_special */
255 static void submit (time_t ts, const char *plugin_instance, /* {{{ */
256 const char *type, const char *type_instance, value_t value)
257 {
258 value_t values[1];
259 value_list_t vl = VALUE_LIST_INIT;
261 values[0] = value;
263 vl.values = values;
264 vl.values_len = 1;
265 vl.time = ts;
266 sstrncpy(vl.host, hostname_g, sizeof(vl.host));
267 sstrncpy(vl.plugin, "bind", sizeof(vl.plugin));
268 if (plugin_instance) {
269 sstrncpy(vl.plugin_instance, plugin_instance,
270 sizeof(vl.plugin_instance));
271 remove_special (vl.plugin_instance, sizeof (vl.plugin_instance));
272 }
273 sstrncpy(vl.type, type, sizeof(vl.type));
274 if (type_instance) {
275 sstrncpy(vl.type_instance, type_instance,
276 sizeof(vl.type_instance));
277 remove_special (vl.plugin_instance, sizeof (vl.plugin_instance));
278 }
279 plugin_dispatch_values(&vl);
280 } /* }}} void submit */
282 static size_t bind_curl_callback (void *buf, size_t size, /* {{{ */
283 size_t nmemb, void __attribute__((unused)) *stream)
284 {
285 size_t len = size * nmemb;
287 if (len <= 0)
288 return (len);
290 if ((bind_buffer_fill + len) >= bind_buffer_size)
291 {
292 char *temp;
294 temp = realloc(bind_buffer, bind_buffer_fill + len + 1);
295 if (temp == NULL)
296 {
297 ERROR ("bind plugin: realloc failed.");
298 return (0);
299 }
300 bind_buffer = temp;
301 bind_buffer_size = bind_buffer_fill + len + 1;
302 }
304 memcpy (bind_buffer + bind_buffer_fill, (char *) buf, len);
305 bind_buffer_fill += len;
306 bind_buffer[bind_buffer_fill] = 0;
308 return (len);
309 } /* }}} size_t bind_curl_callback */
311 /*
312 * Callback, that's called with a translation table.
313 * (Plugin instance is fixed, type and type instance come from lookup table.)
314 */
315 static int bind_xml_table_callback (const char *name, value_t value, /* {{{ */
316 time_t current_time, void *user_data)
317 {
318 translation_table_ptr_t *table = (translation_table_ptr_t *) user_data;
319 size_t i;
321 if (table == NULL)
322 return (-1);
324 for (i = 0; i < table->table_length; i++)
325 {
326 if (strcmp (table->table[i].xml_name, name) != 0)
327 continue;
329 submit (current_time,
330 table->plugin_instance,
331 table->table[i].type,
332 table->table[i].type_instance,
333 value);
334 break;
335 }
337 return (0);
338 } /* }}} int bind_xml_table_callback */
340 /*
341 * Callback, that's used for lists.
342 * (Plugin instance and type are fixed, xml name is used as type instance.)
343 */
344 static int bind_xml_list_callback (const char *name, /* {{{ */
345 value_t value, time_t current_time, void *user_data)
346 {
347 list_info_ptr_t *list_info = (list_info_ptr_t *) user_data;
349 if (list_info == NULL)
350 return (-1);
352 submit (current_time,
353 list_info->plugin_instance,
354 list_info->type,
355 /* type instance = */ name,
356 value);
358 return (0);
359 } /* }}} int bind_xml_list_callback */
361 static int bind_xml_read_counter (xmlDoc *doc, xmlNode *node, /* {{{ */
362 counter_t *ret_value)
363 {
364 char *str_ptr, *end_ptr;
365 long long int value;
367 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
368 if (str_ptr == NULL)
369 {
370 ERROR ("bind plugin: bind_xml_read_counter: xmlNodeListGetString failed.");
371 return (-1);
372 }
374 errno = 0;
375 value = strtoll (str_ptr, &end_ptr, 10);
376 xmlFree(str_ptr);
377 if (str_ptr == end_ptr || errno)
378 {
379 if (errno && (value < 0))
380 ERROR ("bind plugin: bind_xml_read_counter: strtoll failed with underflow.");
381 else if (errno && (value > 0))
382 ERROR ("bind plugin: bind_xml_read_counter: strtoll failed with overflow.");
383 else
384 ERROR ("bind plugin: bind_xml_read_counter: strtoll failed.");
385 return (-1);
386 }
388 *ret_value = value;
389 return (0);
390 } /* }}} int bind_xml_read_counter */
392 static int bind_xml_read_gauge (xmlDoc *doc, xmlNode *node, /* {{{ */
393 gauge_t *ret_value)
394 {
395 char *str_ptr, *end_ptr;
396 double value;
398 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
399 if (str_ptr == NULL)
400 {
401 ERROR ("bind plugin: bind_xml_read_gauge: xmlNodeListGetString failed.");
402 return (-1);
403 }
405 errno = 0;
406 value = strtod (str_ptr, &end_ptr);
407 xmlFree(str_ptr);
408 if (str_ptr == end_ptr || errno)
409 {
410 if (errno && (value < 0))
411 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed with underflow.");
412 else if (errno && (value > 0))
413 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed with overflow.");
414 else
415 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed.");
416 return (-1);
417 }
419 *ret_value = (gauge_t) value;
420 return (0);
421 } /* }}} int bind_xml_read_gauge */
423 static int bind_xml_read_timestamp (const char *xpath_expression, /* {{{ */
424 xmlDoc *doc, xmlXPathContext *xpathCtx, time_t *ret_value)
425 {
426 xmlXPathObject *xpathObj = NULL;
427 xmlNode *node;
428 char *str_ptr;
429 char *tmp;
430 struct tm tm;
432 xpathObj = xmlXPathEvalExpression (BAD_CAST xpath_expression, xpathCtx);
433 if (xpathObj == NULL)
434 {
435 ERROR ("bind plugin: Unable to evaluate XPath expression `%s'.",
436 xpath_expression);
437 return (-1);
438 }
440 if ((xpathObj->nodesetval == NULL) || (xpathObj->nodesetval->nodeNr < 1))
441 {
442 xmlXPathFreeObject (xpathObj);
443 return (-1);
444 }
446 if (xpathObj->nodesetval->nodeNr != 1)
447 {
448 NOTICE ("bind plugin: Evaluating the XPath expression `%s' returned "
449 "%i nodes. Only handling the first one.",
450 xpath_expression, xpathObj->nodesetval->nodeNr);
451 }
453 node = xpathObj->nodesetval->nodeTab[0];
455 if (node->xmlChildrenNode == NULL)
456 {
457 ERROR ("bind plugin: bind_xml_read_timestamp: "
458 "node->xmlChildrenNode == NULL");
459 xmlXPathFreeObject (xpathObj);
460 return (-1);
461 }
463 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
464 if (str_ptr == NULL)
465 {
466 ERROR ("bind plugin: bind_xml_read_timestamp: xmlNodeListGetString failed.");
467 xmlXPathFreeObject (xpathObj);
468 return (-1);
469 }
471 memset (&tm, 0, sizeof(tm));
472 tmp = strptime (str_ptr, "%Y-%m-%dT%T", &tm);
473 xmlFree(str_ptr);
474 if (tmp == NULL)
475 {
476 ERROR ("bind plugin: bind_xml_read_timestamp: strptime failed.");
477 xmlXPathFreeObject (xpathObj);
478 return (-1);
479 }
481 *ret_value = timegm(&tm);
483 xmlXPathFreeObject (xpathObj);
484 return (0);
485 } /* }}} int bind_xml_read_timestamp */
487 /*
488 * bind_parse_generic_name_value
489 *
490 * Reads statistics in the form:
491 * <foo>
492 * <name>QUERY</name>
493 * <counter>123</counter>
494 * </foo>
495 */
496 static int bind_parse_generic_name_value (const char *xpath_expression, /* {{{ */
497 list_callback_t list_callback,
498 void *user_data,
499 xmlDoc *doc, xmlXPathContext *xpathCtx,
500 time_t current_time)
501 {
502 xmlXPathObject *xpathObj = NULL;
503 int num_entries;
504 int i;
506 xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
507 if (xpathObj == NULL)
508 {
509 ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
510 xpath_expression);
511 return (-1);
512 }
514 num_entries = 0;
515 /* Iterate over all matching nodes. */
516 for (i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++)
517 {
518 xmlNode *name_node = NULL;
519 xmlNode *counter = NULL;
520 xmlNode *parent;
521 xmlNode *child;
523 parent = xpathObj->nodesetval->nodeTab[i];
524 DEBUG ("bind plugin: bind_parse_generic_name_value: parent->name = %s;",
525 (char *) parent->name);
527 /* Iterate over all child nodes. */
528 for (child = parent->xmlChildrenNode;
529 child != NULL;
530 child = child->next)
531 {
532 if (child->type != XML_ELEMENT_NODE)
533 continue;
535 if (xmlStrcmp (BAD_CAST "name", child->name) == 0)
536 name_node = child;
537 else if (xmlStrcmp (BAD_CAST "counter", child->name) == 0)
538 counter = child;
539 }
541 if ((name_node != NULL) && (counter != NULL))
542 {
543 char *name = (char *) xmlNodeListGetString (doc,
544 name_node->xmlChildrenNode, 1);
545 value_t value;
546 int status;
548 status = bind_xml_read_counter (doc, counter, &value.counter);
549 if (status != 0)
550 continue;
552 status = (*list_callback) (name, value, current_time, user_data);
553 if (status == 0)
554 num_entries++;
556 xmlFree (name);
557 }
558 }
560 DEBUG ("bind plugin: Found %d %s for XPath expression `%s'",
561 num_entries, (num_entries == 1) ? "entry" : "entries",
562 xpath_expression);
564 xmlXPathFreeObject(xpathObj);
566 return (0);
567 } /* }}} int bind_parse_generic_name_value */
569 /*
570 * bind_parse_generic_value_list
571 *
572 * Reads statistics in the form:
573 * <foo>
574 * <name0>123</name0>
575 * <name1>234</name1>
576 * <name2>345</name2>
577 * :
578 * </foo>
579 */
580 static int bind_parse_generic_value_list (const char *xpath_expression, /* {{{ */
581 list_callback_t list_callback,
582 void *user_data,
583 xmlDoc *doc, xmlXPathContext *xpathCtx,
584 time_t current_time, int ds_type)
585 {
586 xmlXPathObject *xpathObj = NULL;
587 int num_entries;
588 int i;
590 xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
591 if (xpathObj == NULL)
592 {
593 ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
594 xpath_expression);
595 return (-1);
596 }
598 num_entries = 0;
599 /* Iterate over all matching nodes. */
600 for (i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++)
601 {
602 xmlNode *child;
604 /* Iterate over all child nodes. */
605 for (child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode;
606 child != NULL;
607 child = child->next)
608 {
609 char *node_name;
610 value_t value;
611 int status;
613 if (child->type != XML_ELEMENT_NODE)
614 continue;
616 node_name = (char *) child->name;
618 if (ds_type == DS_TYPE_GAUGE)
619 status = bind_xml_read_gauge (doc, child, &value.gauge);
620 else
621 status = bind_xml_read_counter (doc, child, &value.counter);
622 if (status != 0)
623 continue;
625 status = (*list_callback) (node_name, value, current_time, user_data);
626 if (status == 0)
627 num_entries++;
628 }
629 }
631 DEBUG ("bind plugin: Found %d %s for XPath expression `%s'",
632 num_entries, (num_entries == 1) ? "entry" : "entries",
633 xpath_expression);
635 xmlXPathFreeObject(xpathObj);
637 return (0);
638 } /* }}} int bind_parse_generic_value_list */
640 static int bind_xml_stats_handle_zone (int version, xmlDoc *doc, /* {{{ */
641 xmlXPathContext *path_ctx, xmlNode *node, cb_view_t *view,
642 time_t current_time)
643 {
644 xmlXPathObject *path_obj;
645 char *zone_name = NULL;
646 int i;
647 size_t j;
649 path_obj = xmlXPathEvalExpression (BAD_CAST "name", path_ctx);
650 if (path_obj == NULL)
651 {
652 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
653 return (-1);
654 }
656 for (i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr); i++)
657 {
658 zone_name = (char *) xmlNodeListGetString (doc,
659 path_obj->nodesetval->nodeTab[i]->xmlChildrenNode, 1);
660 if (zone_name != NULL)
661 break;
662 }
664 if (zone_name == NULL)
665 {
666 ERROR ("bind plugin: Could not determine zone name.");
667 xmlXPathFreeObject (path_obj);
668 return (-1);
669 }
671 for (j = 0; j < view->zones_num; j++)
672 {
673 if (strcasecmp (zone_name, view->zones[j]) == 0)
674 break;
675 }
677 xmlFree (zone_name);
678 zone_name = NULL;
680 if (j >= views_num)
681 {
682 xmlXPathFreeObject (path_obj);
683 return (0);
684 }
686 zone_name = view->zones[j];
688 DEBUG ("bind plugin: bind_xml_stats_handle_zone: Found zone `%s'.",
689 zone_name);
691 { /* Parse the <counters> tag {{{ */
692 char plugin_instance[DATA_MAX_NAME_LEN];
693 translation_table_ptr_t table_ptr =
694 {
695 nsstats_translation_table,
696 nsstats_translation_table_length,
697 plugin_instance
698 };
700 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-zone-%s",
701 view->name, zone_name);
703 bind_parse_generic_value_list (/* xpath = */ "counters",
704 /* callback = */ bind_xml_table_callback,
705 /* user_data = */ &table_ptr,
706 doc, path_ctx, current_time, DS_TYPE_COUNTER);
707 } /* }}} */
709 xmlXPathFreeObject (path_obj);
711 return (0);
712 } /* }}} int bind_xml_stats_handle_zone */
714 static int bind_xml_stats_search_zones (int version, xmlDoc *doc, /* {{{ */
715 xmlXPathContext *path_ctx, xmlNode *node, cb_view_t *view,
716 time_t current_time)
717 {
718 xmlXPathObject *zone_nodes = NULL;
719 xmlXPathContext *zone_path_context;
720 int i;
722 zone_path_context = xmlXPathNewContext (doc);
723 if (zone_path_context == NULL)
724 {
725 ERROR ("bind plugin: xmlXPathNewContext failed.");
726 return (-1);
727 }
729 zone_nodes = xmlXPathEvalExpression (BAD_CAST "zones/zone", path_ctx);
730 if (zone_nodes == NULL)
731 {
732 ERROR ("bind plugin: Cannot find any <view> tags.");
733 xmlXPathFreeContext (zone_path_context);
734 return (-1);
735 }
737 for (i = 0; i < zone_nodes->nodesetval->nodeNr; i++)
738 {
739 xmlNode *node;
741 node = zone_nodes->nodesetval->nodeTab[i];
742 assert (node != NULL);
744 zone_path_context->node = node;
746 bind_xml_stats_handle_zone (version, doc, zone_path_context, node, view,
747 current_time);
748 }
750 xmlXPathFreeObject (zone_nodes);
751 xmlXPathFreeContext (zone_path_context);
752 return (0);
753 } /* }}} int bind_xml_stats_search_zones */
755 static int bind_xml_stats_handle_view (int version, xmlDoc *doc, /* {{{ */
756 xmlXPathContext *path_ctx, xmlNode *node, time_t current_time)
757 {
758 xmlXPathObject *path_obj;
759 char *view_name = NULL;
760 cb_view_t *view;
761 int i;
762 size_t j;
764 path_obj = xmlXPathEvalExpression (BAD_CAST "name", path_ctx);
765 if (path_obj == NULL)
766 {
767 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
768 return (-1);
769 }
771 for (i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr); i++)
772 {
773 view_name = (char *) xmlNodeListGetString (doc,
774 path_obj->nodesetval->nodeTab[i]->xmlChildrenNode, 1);
775 if (view_name != NULL)
776 break;
777 }
779 if (view_name == NULL)
780 {
781 ERROR ("bind plugin: Could not determine view name.");
782 xmlXPathFreeObject (path_obj);
783 return (-1);
784 }
786 for (j = 0; j < views_num; j++)
787 {
788 if (strcasecmp (view_name, views[j].name) == 0)
789 break;
790 }
792 xmlFree (view_name);
793 xmlXPathFreeObject (path_obj);
795 view_name = NULL;
796 path_obj = NULL;
798 if (j >= views_num)
799 return (0);
801 view = views + j;
803 DEBUG ("bind plugin: bind_xml_stats_handle_view: Found view `%s'.",
804 view->name);
806 if (view->qtypes != 0) /* {{{ */
807 {
808 char plugin_instance[DATA_MAX_NAME_LEN];
809 list_info_ptr_t list_info =
810 {
811 plugin_instance,
812 /* type = */ "dns_qtype"
813 };
815 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-qtypes",
816 view->name);
818 bind_parse_generic_name_value (/* xpath = */ "rdtype",
819 /* callback = */ bind_xml_list_callback,
820 /* user_data = */ &list_info,
821 doc, path_ctx, current_time);
822 } /* }}} */
824 if (view->resolver_stats != 0) /* {{{ */
825 {
826 char plugin_instance[DATA_MAX_NAME_LEN];
827 translation_table_ptr_t table_ptr =
828 {
829 resstats_translation_table,
830 resstats_translation_table_length,
831 plugin_instance
832 };
834 ssnprintf (plugin_instance, sizeof (plugin_instance),
835 "%s-resolver_stats", view->name);
837 bind_parse_generic_name_value ("resstat",
838 /* callback = */ bind_xml_table_callback,
839 /* user_data = */ &table_ptr,
840 doc, path_ctx, current_time);
841 } /* }}} */
843 if (view->cacherrsets != 0) /* {{{ */
844 {
845 char plugin_instance[DATA_MAX_NAME_LEN];
846 list_info_ptr_t list_info =
847 {
848 plugin_instance,
849 /* type = */ "dns_qtype"
850 };
852 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-cache_rr_sets",
853 view->name);
855 bind_parse_generic_name_value (/* xpath = */ "cache/rrset",
856 /* callback = */ bind_xml_list_callback,
857 /* user_data = */ &list_info,
858 doc, path_ctx, current_time);
859 } /* }}} */
861 if (view->zones_num > 0)
862 bind_xml_stats_search_zones (version, doc, path_ctx, node, view,
863 current_time);
865 return (0);
866 } /* }}} int bind_xml_stats_handle_view */
868 static int bind_xml_stats_search_views (int version, xmlDoc *doc, /* {{{ */
869 xmlXPathContext *xpathCtx, xmlNode *statsnode, time_t current_time)
870 {
871 xmlXPathObject *view_nodes = NULL;
872 xmlXPathContext *view_path_context;
873 int i;
875 view_path_context = xmlXPathNewContext (doc);
876 if (view_path_context == NULL)
877 {
878 ERROR ("bind plugin: xmlXPathNewContext failed.");
879 return (-1);
880 }
882 view_nodes = xmlXPathEvalExpression (BAD_CAST "views/view", xpathCtx);
883 if (view_nodes == NULL)
884 {
885 ERROR ("bind plugin: Cannot find any <view> tags.");
886 xmlXPathFreeContext (view_path_context);
887 return (-1);
888 }
890 for (i = 0; i < view_nodes->nodesetval->nodeNr; i++)
891 {
892 xmlNode *node;
894 node = view_nodes->nodesetval->nodeTab[i];
895 assert (node != NULL);
897 view_path_context->node = node;
899 bind_xml_stats_handle_view (version, doc, view_path_context, node,
900 current_time);
901 }
903 xmlXPathFreeObject (view_nodes);
904 xmlXPathFreeContext (view_path_context);
905 return (0);
906 } /* }}} int bind_xml_stats_search_views */
908 static int bind_xml_stats (int version, xmlDoc *doc, /* {{{ */
909 xmlXPathContext *xpathCtx, xmlNode *statsnode)
910 {
911 time_t current_time = 0;
912 int status;
914 xpathCtx->node = statsnode;
916 /* TODO: Check `server/boot-time' to recognize server restarts. */
918 status = bind_xml_read_timestamp ("server/current-time",
919 doc, xpathCtx, ¤t_time);
920 if (status != 0)
921 {
922 ERROR ("bind plugin: Reading `server/current-time' failed.");
923 return (-1);
924 }
925 DEBUG ("bind plugin: Current server time is %i.", (int) current_time);
927 /* XPath: server/requests/opcode
928 * Variables: QUERY, IQUERY, NOTIFY, UPDATE, ...
929 * Layout:
930 * <opcode>
931 * <name>A</name>
932 * <counter>1</counter>
933 * </opcode>
934 * :
935 */
936 if (global_opcodes != 0)
937 {
938 list_info_ptr_t list_info =
939 {
940 /* plugin instance = */ "global-opcodes",
941 /* type = */ "dns_opcode"
942 };
944 bind_parse_generic_name_value (/* xpath = */ "server/requests/opcode",
945 /* callback = */ bind_xml_list_callback,
946 /* user_data = */ &list_info,
947 doc, xpathCtx, current_time);
948 }
950 /* XPath: server/queries-in/rdtype
951 * Variables: RESERVED0, A, NS, CNAME, SOA, MR, PTR, HINFO, MX, TXT, RP,
952 * X25, PX, AAAA, LOC, SRV, NAPTR, A6, DS, RRSIG, NSEC, DNSKEY,
953 * SPF, TKEY, IXFR, AXFR, ANY, ..., Others
954 * Layout:
955 * <rdtype>
956 * <name>A</name>
957 * <counter>1</counter>
958 * </rdtype>
959 * :
960 */
961 if (global_qtypes != 0)
962 {
963 list_info_ptr_t list_info =
964 {
965 /* plugin instance = */ "global-qtypes",
966 /* type = */ "dns_qtype"
967 };
969 bind_parse_generic_name_value (/* xpath = */ "server/queries-in/rdtype",
970 /* callback = */ bind_xml_list_callback,
971 /* user_data = */ &list_info,
972 doc, xpathCtx, current_time);
973 }
975 /* XPath: server/nsstats, server/nsstat
976 * Variables: Requestv4, Requestv6, ReqEdns0, ReqBadEDNSVer, ReqTSIG,
977 * ReqSIG0, ReqBadSIG, ReqTCP, AuthQryRej, RecQryRej, XfrRej,
978 * UpdateRej, Response, TruncatedResp, RespEDNS0, RespTSIG,
979 * RespSIG0, QrySuccess, QryAuthAns, QryNoauthAns, QryReferral,
980 * QryNxrrset, QrySERVFAIL, QryFORMERR, QryNXDOMAIN, QryRecursion,
981 * QryDuplicate, QryDropped, QryFailure, XfrReqDone, UpdateReqFwd,
982 * UpdateRespFwd, UpdateFwdFail, UpdateDone, UpdateFail,
983 * UpdateBadPrereq
984 * Layout v1:
985 * <nsstats>
986 * <Requestv4>1</Requestv4>
987 * <Requestv6>0</Requestv6>
988 * :
989 * </nsstats>
990 * Layout v2:
991 * <nsstat>
992 * <name>Requestv4</name>
993 * <counter>1</counter>
994 * </nsstat>
995 * <nsstat>
996 * <name>Requestv6</name>
997 * <counter>0</counter>
998 * </nsstat>
999 * :
1000 */
1001 if (global_server_stats)
1002 {
1003 translation_table_ptr_t table_ptr =
1004 {
1005 nsstats_translation_table,
1006 nsstats_translation_table_length,
1007 /* plugin_instance = */ "global-server_stats"
1008 };
1010 if (version == 1)
1011 {
1012 bind_parse_generic_value_list ("server/nsstats",
1013 /* callback = */ bind_xml_table_callback,
1014 /* user_data = */ &table_ptr,
1015 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1016 }
1017 else
1018 {
1019 bind_parse_generic_name_value ("server/nsstat",
1020 /* callback = */ bind_xml_table_callback,
1021 /* user_data = */ &table_ptr,
1022 doc, xpathCtx, current_time);
1023 }
1024 }
1026 /* XPath: server/zonestats, server/zonestat
1027 * Variables: NotifyOutv4, NotifyOutv6, NotifyInv4, NotifyInv6, NotifyRej,
1028 * SOAOutv4, SOAOutv6, AXFRReqv4, AXFRReqv6, IXFRReqv4, IXFRReqv6,
1029 * XfrSuccess, XfrFail
1030 * Layout v1:
1031 * <zonestats>
1032 * <NotifyOutv4>0</NotifyOutv4>
1033 * <NotifyOutv6>0</NotifyOutv6>
1034 * :
1035 * </zonestats>
1036 * Layout v2:
1037 * <zonestat>
1038 * <name>NotifyOutv4</name>
1039 * <counter>0</counter>
1040 * </zonestat>
1041 * <zonestat>
1042 * <name>NotifyOutv6</name>
1043 * <counter>0</counter>
1044 * </zonestat>
1045 * :
1046 */
1047 if (global_zone_maint_stats)
1048 {
1049 translation_table_ptr_t table_ptr =
1050 {
1051 zonestats_translation_table,
1052 zonestats_translation_table_length,
1053 /* plugin_instance = */ "global-zone_maint_stats"
1054 };
1056 if (version == 1)
1057 {
1058 bind_parse_generic_value_list ("server/zonestats",
1059 /* callback = */ bind_xml_table_callback,
1060 /* user_data = */ &table_ptr,
1061 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1062 }
1063 else
1064 {
1065 bind_parse_generic_name_value ("server/zonestat",
1066 /* callback = */ bind_xml_table_callback,
1067 /* user_data = */ &table_ptr,
1068 doc, xpathCtx, current_time);
1069 }
1070 }
1072 /* XPath: server/resstats
1073 * Variables: Queryv4, Queryv6, Responsev4, Responsev6, NXDOMAIN, SERVFAIL,
1074 * FORMERR, OtherError, EDNS0Fail, Mismatch, Truncated, Lame,
1075 * Retry, GlueFetchv4, GlueFetchv6, GlueFetchv4Fail,
1076 * GlueFetchv6Fail, ValAttempt, ValOk, ValNegOk, ValFail
1077 * Layout v1:
1078 * <resstats>
1079 * <Queryv4>0</Queryv4>
1080 * <Queryv6>0</Queryv6>
1081 * :
1082 * </resstats>
1083 * Layout v2:
1084 * <resstat>
1085 * <name>Queryv4</name>
1086 * <counter>0</counter>
1087 * </resstat>
1088 * <resstat>
1089 * <name>Queryv6</name>
1090 * <counter>0</counter>
1091 * </resstat>
1092 * :
1093 */
1094 if (global_resolver_stats != 0)
1095 {
1096 translation_table_ptr_t table_ptr =
1097 {
1098 resstats_translation_table,
1099 resstats_translation_table_length,
1100 /* plugin_instance = */ "global-resolver_stats"
1101 };
1103 if (version == 1)
1104 {
1105 bind_parse_generic_value_list ("server/resstats",
1106 /* callback = */ bind_xml_table_callback,
1107 /* user_data = */ &table_ptr,
1108 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1109 }
1110 else
1111 {
1112 bind_parse_generic_name_value ("server/resstat",
1113 /* callback = */ bind_xml_table_callback,
1114 /* user_data = */ &table_ptr,
1115 doc, xpathCtx, current_time);
1116 }
1117 }
1119 /* XPath: memory/summary
1120 * Variables: TotalUse, InUse, BlockSize, ContextSize, Lost
1121 * Layout: v2:
1122 * <summary>
1123 * <TotalUse>6587096</TotalUse>
1124 * <InUse>1345424</InUse>
1125 * <BlockSize>5505024</BlockSize>
1126 * <ContextSize>3732456</ContextSize>
1127 * <Lost>0</Lost>
1128 * </summary>
1129 */
1130 if (global_memory_stats != 0)
1131 {
1132 translation_table_ptr_t table_ptr =
1133 {
1134 memsummary_translation_table,
1135 memsummary_translation_table_length,
1136 /* plugin_instance = */ "global-memory_stats"
1137 };
1139 bind_parse_generic_value_list ("memory/summary",
1140 /* callback = */ bind_xml_table_callback,
1141 /* user_data = */ &table_ptr,
1142 doc, xpathCtx, current_time, DS_TYPE_GAUGE);
1143 }
1145 if (views_num > 0)
1146 bind_xml_stats_search_views (version, doc, xpathCtx, statsnode,
1147 current_time);
1149 return 0;
1150 } /* }}} int bind_xml_stats */
1152 static int bind_xml (const char *data) /* {{{ */
1153 {
1154 xmlDoc *doc = NULL;
1155 xmlXPathContext *xpathCtx = NULL;
1156 xmlXPathObject *xpathObj = NULL;
1157 int ret = -1;
1158 int i;
1160 doc = xmlParseMemory (data, strlen (data));
1161 if (doc == NULL)
1162 {
1163 ERROR ("bind plugin: xmlParseMemory failed.");
1164 return (-1);
1165 }
1167 xpathCtx = xmlXPathNewContext (doc);
1168 if (xpathCtx == NULL)
1169 {
1170 ERROR ("bind plugin: xmlXPathNewContext failed.");
1171 xmlFreeDoc (doc);
1172 return (-1);
1173 }
1175 xpathObj = xmlXPathEvalExpression (BAD_CAST "/isc/bind/statistics", xpathCtx);
1176 if (xpathObj == NULL)
1177 {
1178 ERROR ("bind plugin: Cannot find the <statistics> tag.");
1179 xmlXPathFreeContext (xpathCtx);
1180 xmlFreeDoc (doc);
1181 return (-1);
1182 }
1183 else if (xpathObj->nodesetval == NULL)
1184 {
1185 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
1186 xmlXPathFreeObject (xpathObj);
1187 xmlXPathFreeContext (xpathCtx);
1188 xmlFreeDoc (doc);
1189 return (-1);
1190 }
1192 for (i = 0; i < xpathObj->nodesetval->nodeNr; i++)
1193 {
1194 xmlNode *node;
1195 char *attr_version;
1196 int parsed_version = 0;
1198 node = xpathObj->nodesetval->nodeTab[i];
1199 assert (node != NULL);
1201 attr_version = (char *) xmlGetProp (node, BAD_CAST "version");
1202 if (attr_version == NULL)
1203 {
1204 NOTICE ("bind plugin: Found <statistics> tag doesn't have a "
1205 "`version' attribute.");
1206 continue;
1207 }
1208 DEBUG ("bind plugin: Found: <statistics version=\"%s\">", attr_version);
1210 /* At the time this plugin was written, version "1.0" was used by
1211 * BIND 9.5.0, version "2.0" was used by BIND 9.5.1 and 9.6.0. We assume
1212 * that "1.*" and "2.*" don't introduce structural changes, so we just
1213 * check for the first two characters here. */
1214 if (strncmp ("1.", attr_version, strlen ("1.")) == 0)
1215 parsed_version = 1;
1216 else if (strncmp ("2.", attr_version, strlen ("2.")) == 0)
1217 parsed_version = 2;
1218 else
1219 {
1220 /* TODO: Use the complaint mechanism here. */
1221 NOTICE ("bind plugin: Found <statistics> tag with version `%s'. "
1222 "Unfortunately I have no clue how to parse that. "
1223 "Please open a bug report for this.", attr_version);
1224 xmlFree (attr_version);
1225 continue;
1226 }
1228 ret = bind_xml_stats (parsed_version,
1229 doc, xpathCtx, node);
1231 xmlFree (attr_version);
1232 /* One <statistics> node ought to be enough. */
1233 break;
1234 }
1236 xmlXPathFreeObject (xpathObj);
1237 xmlXPathFreeContext (xpathCtx);
1238 xmlFreeDoc (doc);
1240 return (ret);
1241 } /* }}} int bind_xml */
1243 static int bind_config_set_bool (const char *name, int *var, /* {{{ */
1244 oconfig_item_t *ci)
1245 {
1246 if ((ci->values_num != 1) || ( ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
1247 {
1248 WARNING ("bind plugin: The `%s' option needs "
1249 "exactly one boolean argument.", name);
1250 return (-1);
1251 }
1253 if (ci->values[0].value.boolean)
1254 *var = 1;
1255 else
1256 *var = 0;
1257 return 0;
1258 } /* }}} int bind_config_set_bool */
1260 static int bind_config_add_view_zone (cb_view_t *view, /* {{{ */
1261 oconfig_item_t *ci)
1262 {
1263 char **tmp;
1265 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1266 {
1267 WARNING ("bind plugin: The `Zone' option needs "
1268 "exactly one string argument.");
1269 return (-1);
1270 }
1272 tmp = (char **) realloc (view->zones,
1273 sizeof (char *) * (view->zones_num + 1));
1274 if (tmp == NULL)
1275 {
1276 ERROR ("bind plugin: realloc failed.");
1277 return (-1);
1278 }
1279 view->zones = tmp;
1281 view->zones[view->zones_num] = strdup (ci->values[0].value.string);
1282 if (view->zones[view->zones_num] == NULL)
1283 {
1284 ERROR ("bind plugin: strdup failed.");
1285 return (-1);
1286 }
1287 view->zones_num++;
1289 return (0);
1290 } /* }}} int bind_config_add_view_zone */
1292 static int bind_config_add_view (oconfig_item_t *ci) /* {{{ */
1293 {
1294 cb_view_t *tmp;
1295 int i;
1297 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1298 {
1299 WARNING ("bind plugin: `View' blocks need exactly one string argument.");
1300 return (-1);
1301 }
1303 tmp = (cb_view_t *) realloc (views, sizeof (*views) * (views_num + 1));
1304 if (tmp == NULL)
1305 {
1306 ERROR ("bind plugin: realloc failed.");
1307 return (-1);
1308 }
1309 views = tmp;
1310 tmp = views + views_num;
1312 memset (tmp, 0, sizeof (*tmp));
1313 tmp->qtypes = 1;
1314 tmp->resolver_stats = 1;
1315 tmp->cacherrsets = 1;
1316 tmp->zones = NULL;
1317 tmp->zones_num = 0;
1319 tmp->name = strdup (ci->values[0].value.string);
1320 if (tmp->name == NULL)
1321 {
1322 ERROR ("bind plugin: strdup failed.");
1323 free (tmp);
1324 return (-1);
1325 }
1327 for (i = 0; i < ci->children_num; i++)
1328 {
1329 oconfig_item_t *child = ci->children + i;
1331 if (strcasecmp ("QTypes", child->key) == 0)
1332 bind_config_set_bool ("QTypes", &tmp->qtypes, child);
1333 else if (strcasecmp ("ResolverStats", child->key) == 0)
1334 bind_config_set_bool ("ResolverStats", &tmp->resolver_stats, child);
1335 else if (strcasecmp ("CacheRRSets", child->key) == 0)
1336 bind_config_set_bool ("CacheRRSets", &tmp->cacherrsets, child);
1337 else if (strcasecmp ("Zone", child->key) == 0)
1338 bind_config_add_view_zone (tmp, child);
1339 else
1340 {
1341 WARNING ("bind plugin: Unknown configuration option "
1342 "`%s' in view `%s' will be ignored.", child->key, tmp->name);
1343 }
1344 } /* for (i = 0; i < ci->children_num; i++) */
1346 views_num++;
1347 return (0);
1348 } /* }}} int bind_config_add_view */
1350 static int bind_config (oconfig_item_t *ci) /* {{{ */
1351 {
1352 int i;
1354 for (i = 0; i < ci->children_num; i++)
1355 {
1356 oconfig_item_t *child = ci->children + i;
1358 if (strcasecmp ("Url", child->key) == 0) {
1359 if ((child->values_num != 1) || (child->values[0].type != OCONFIG_TYPE_STRING))
1360 {
1361 WARNING ("bind plugin: The `Url' option needs "
1362 "exactly one string argument.");
1363 return (-1);
1364 }
1366 url = strdup (child->values[0].value.string);
1367 } else if (strcasecmp ("OpCodes", child->key) == 0)
1368 bind_config_set_bool ("OpCodes", &global_opcodes, child);
1369 else if (strcasecmp ("QTypes", child->key) == 0)
1370 bind_config_set_bool ("QTypes", &global_qtypes, child);
1371 else if (strcasecmp ("ServerStats", child->key) == 0)
1372 bind_config_set_bool ("ServerStats", &global_server_stats, child);
1373 else if (strcasecmp ("ZoneMaintStats", child->key) == 0)
1374 bind_config_set_bool ("ZoneMaintStats", &global_zone_maint_stats, child);
1375 else if (strcasecmp ("ResolverStats", child->key) == 0)
1376 bind_config_set_bool ("ResolverStats", &global_resolver_stats, child);
1377 else if (strcasecmp ("MemoryStats", child->key) == 0)
1378 bind_config_set_bool ("MemoryStats", &global_memory_stats, child);
1379 else if (strcasecmp ("View", child->key) == 0)
1380 bind_config_add_view (child);
1381 else
1382 {
1383 WARNING ("bind plugin: Unknown configuration option "
1384 "`%s' will be ignored.", child->key);
1385 }
1386 }
1388 return (0);
1389 } /* }}} int bind_config */
1391 static int bind_init (void) /* {{{ */
1392 {
1393 if (curl != NULL)
1394 return (0);
1396 curl = curl_easy_init ();
1397 if (curl == NULL)
1398 {
1399 ERROR ("bind plugin: bind_init: curl_easy_init failed.");
1400 return (-1);
1401 }
1403 curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, bind_curl_callback);
1404 curl_easy_setopt (curl, CURLOPT_USERAGENT, PACKAGE_NAME"/"PACKAGE_VERSION);
1405 curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, bind_curl_error);
1406 curl_easy_setopt (curl, CURLOPT_URL, (url != NULL) ? url : BIND_DEFAULT_URL);
1408 return (0);
1409 } /* }}} int bind_init */
1411 static int bind_read (void) /* {{{ */
1412 {
1413 int status;
1415 if (curl == NULL)
1416 {
1417 ERROR ("bind plugin: I don't have a CURL object.");
1418 return (-1);
1419 }
1421 bind_buffer_fill = 0;
1422 if (curl_easy_perform (curl) != 0)
1423 {
1424 ERROR ("bind plugin: curl_easy_perform failed: %s",
1425 bind_curl_error);
1426 return (-1);
1427 }
1429 status = bind_xml (bind_buffer);
1430 if (status != 0)
1431 return (-1);
1432 else
1433 return (0);
1434 } /* }}} int bind_read */
1436 static int bind_shutdown (void) /* {{{ */
1437 {
1438 if (curl != NULL)
1439 {
1440 curl_easy_cleanup (curl);
1441 curl = NULL;
1442 }
1444 return (0);
1445 } /* }}} int bind_shutdown */
1447 void module_register (void)
1448 {
1449 plugin_register_complex_config ("bind", bind_config);
1450 plugin_register_init ("bind", bind_init);
1451 plugin_register_read ("bind", bind_read);
1452 plugin_register_shutdown ("bind", bind_shutdown);
1453 } /* void module_register */
1455 /* vim: set sw=2 sts=2 ts=8 et fdm=marker : */