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 /* FIXME: Enabled by default for backwards compatibility. */
102 /* TODO: Remove time parsing code. */
103 static _Bool config_parse_time = 1;
105 static char *url = NULL;
106 static int global_opcodes = 1;
107 static int global_qtypes = 1;
108 static int global_server_stats = 1;
109 static int global_zone_maint_stats = 1;
110 static int global_resolver_stats = 0;
111 static int global_memory_stats = 1;
112 static int timeout = -1;
114 static cb_view_t *views = NULL;
115 static size_t views_num = 0;
117 static CURL *curl = NULL;
119 static char *bind_buffer = NULL;
120 static size_t bind_buffer_size = 0;
121 static size_t bind_buffer_fill = 0;
122 static char bind_curl_error[CURL_ERROR_SIZE];
124 /* Translation table for the `nsstats' values. */
125 static const translation_info_t nsstats_translation_table[] = /* {{{ */
126 {
127 /* Requests */
128 { "Requestv4", "dns_request", "IPv4" },
129 { "Requestv6", "dns_request", "IPv6" },
130 { "ReqEdns0", "dns_request", "EDNS0" },
131 { "ReqBadEDNSVer", "dns_request", "BadEDNSVer" },
132 { "ReqTSIG", "dns_request", "TSIG" },
133 { "ReqSIG0", "dns_request", "SIG0" },
134 { "ReqBadSIG", "dns_request", "BadSIG" },
135 { "ReqTCP", "dns_request", "TCP" },
136 /* Rejects */
137 { "AuthQryRej", "dns_reject", "authorative" },
138 { "RecQryRej", "dns_reject", "recursive" },
139 { "XfrRej", "dns_reject", "transfer" },
140 { "UpdateRej", "dns_reject", "update" },
141 /* Responses */
142 { "Response", "dns_response", "normal" },
143 { "TruncatedResp", "dns_response", "truncated" },
144 { "RespEDNS0", "dns_response", "EDNS0" },
145 { "RespTSIG", "dns_response", "TSIG" },
146 { "RespSIG0", "dns_response", "SIG0" },
147 /* Queries */
148 { "QryAuthAns", "dns_query", "authorative" },
149 { "QryNoauthAns", "dns_query", "nonauth" },
150 { "QryReferral", "dns_query", "referral" },
151 { "QryRecursion", "dns_query", "recursion" },
152 { "QryDuplicate", "dns_query", "dupliate" },
153 { "QryDropped", "dns_query", "dropped" },
154 { "QryFailure", "dns_query", "failure" },
155 /* Response codes */
156 { "QrySuccess", "dns_rcode", "tx-NOERROR" },
157 { "QryNxrrset", "dns_rcode", "tx-NXRRSET" },
158 { "QrySERVFAIL", "dns_rcode", "tx-SERVFAIL" },
159 { "QryFORMERR", "dns_rcode", "tx-FORMERR" },
160 { "QryNXDOMAIN", "dns_rcode", "tx-NXDOMAIN" }
161 #if 0
162 { "XfrReqDone", "type", "type_instance" },
163 { "UpdateReqFwd", "type", "type_instance" },
164 { "UpdateRespFwd", "type", "type_instance" },
165 { "UpdateFwdFail", "type", "type_instance" },
166 { "UpdateDone", "type", "type_instance" },
167 { "UpdateFail", "type", "type_instance" },
168 { "UpdateBadPrereq", "type", "type_instance" },
169 #endif
170 };
171 static int nsstats_translation_table_length =
172 STATIC_ARRAY_SIZE (nsstats_translation_table);
173 /* }}} */
175 /* Translation table for the `zonestats' values. */
176 static const translation_info_t zonestats_translation_table[] = /* {{{ */
177 {
178 /* Notify's */
179 { "NotifyOutv4", "dns_notify", "tx-IPv4" },
180 { "NotifyOutv6", "dns_notify", "tx-IPv6" },
181 { "NotifyInv4", "dns_notify", "rx-IPv4" },
182 { "NotifyInv6", "dns_notify", "rx-IPv6" },
183 { "NotifyRej", "dns_notify", "rejected" },
184 /* SOA/AXFS/IXFS requests */
185 { "SOAOutv4", "dns_opcode", "SOA-IPv4" },
186 { "SOAOutv6", "dns_opcode", "SOA-IPv6" },
187 { "AXFRReqv4", "dns_opcode", "AXFR-IPv4" },
188 { "AXFRReqv6", "dns_opcode", "AXFR-IPv6" },
189 { "IXFRReqv4", "dns_opcode", "IXFR-IPv4" },
190 { "IXFRReqv6", "dns_opcode", "IXFR-IPv6" },
191 /* Domain transfers */
192 { "XfrSuccess", "dns_transfer", "success" },
193 { "XfrFail", "dns_transfer", "failure" }
194 };
195 static int zonestats_translation_table_length =
196 STATIC_ARRAY_SIZE (zonestats_translation_table);
197 /* }}} */
199 /* Translation table for the `resstats' values. */
200 static const translation_info_t resstats_translation_table[] = /* {{{ */
201 {
202 /* Generic resolver information */
203 { "Queryv4", "dns_query", "IPv4" },
204 { "Queryv6", "dns_query", "IPv6" },
205 { "Responsev4", "dns_response", "IPv4" },
206 { "Responsev6", "dns_response", "IPv6" },
207 /* Received response codes */
208 { "NXDOMAIN", "dns_rcode", "rx-NXDOMAIN" },
209 { "SERVFAIL", "dns_rcode", "rx-SERVFAIL" },
210 { "FORMERR", "dns_rcode", "rx-FORMERR" },
211 { "OtherError", "dns_rcode", "rx-OTHER" },
212 { "EDNS0Fail", "dns_rcode", "rx-EDNS0Fail"},
213 /* Received responses */
214 { "Mismatch", "dns_response", "mismatch" },
215 { "Truncated", "dns_response", "truncated" },
216 { "Lame", "dns_response", "lame" },
217 { "Retry", "dns_query", "retry" },
218 #if 0
219 { "GlueFetchv4", "type", "type_instance" },
220 { "GlueFetchv6", "type", "type_instance" },
221 { "GlueFetchv4Fail", "type", "type_instance" },
222 { "GlueFetchv6Fail", "type", "type_instance" },
223 #endif
224 /* DNSSEC information */
225 { "ValAttempt", "dns_resolver", "DNSSEC-attempt" },
226 { "ValOk", "dns_resolver", "DNSSEC-okay" },
227 { "ValNegOk", "dns_resolver", "DNSSEC-negokay" },
228 { "ValFail", "dns_resolver", "DNSSEC-fail" }
229 };
230 static int resstats_translation_table_length =
231 STATIC_ARRAY_SIZE (resstats_translation_table);
232 /* }}} */
234 /* Translation table for the `memory/summary' values. */
235 static const translation_info_t memsummary_translation_table[] = /* {{{ */
236 {
237 { "TotalUse", "memory", "TotalUse" },
238 { "InUse", "memory", "InUse" },
239 { "BlockSize", "memory", "BlockSize" },
240 { "ContextSize", "memory", "ContextSize" },
241 { "Lost", "memory", "Lost" }
242 };
243 static int memsummary_translation_table_length =
244 STATIC_ARRAY_SIZE (memsummary_translation_table);
245 /* }}} */
247 static void submit (time_t ts, const char *plugin_instance, /* {{{ */
248 const char *type, const char *type_instance, value_t value)
249 {
250 value_t values[1];
251 value_list_t vl = VALUE_LIST_INIT;
253 values[0] = value;
255 vl.values = values;
256 vl.values_len = 1;
257 if (config_parse_time)
258 vl.time = TIME_T_TO_CDTIME_T (ts);
259 sstrncpy(vl.host, hostname_g, sizeof(vl.host));
260 sstrncpy(vl.plugin, "bind", sizeof(vl.plugin));
261 if (plugin_instance) {
262 sstrncpy(vl.plugin_instance, plugin_instance,
263 sizeof(vl.plugin_instance));
264 replace_special (vl.plugin_instance, sizeof (vl.plugin_instance));
265 }
266 sstrncpy(vl.type, type, sizeof(vl.type));
267 if (type_instance) {
268 sstrncpy(vl.type_instance, type_instance,
269 sizeof(vl.type_instance));
270 replace_special (vl.type_instance, sizeof (vl.type_instance));
271 }
272 plugin_dispatch_values(&vl);
273 } /* }}} void submit */
275 static size_t bind_curl_callback (void *buf, size_t size, /* {{{ */
276 size_t nmemb, void __attribute__((unused)) *stream)
277 {
278 size_t len = size * nmemb;
280 if (len <= 0)
281 return (len);
283 if ((bind_buffer_fill + len) >= bind_buffer_size)
284 {
285 char *temp;
287 temp = realloc(bind_buffer, bind_buffer_fill + len + 1);
288 if (temp == NULL)
289 {
290 ERROR ("bind plugin: realloc failed.");
291 return (0);
292 }
293 bind_buffer = temp;
294 bind_buffer_size = bind_buffer_fill + len + 1;
295 }
297 memcpy (bind_buffer + bind_buffer_fill, (char *) buf, len);
298 bind_buffer_fill += len;
299 bind_buffer[bind_buffer_fill] = 0;
301 return (len);
302 } /* }}} size_t bind_curl_callback */
304 /*
305 * Callback, that's called with a translation table.
306 * (Plugin instance is fixed, type and type instance come from lookup table.)
307 */
308 static int bind_xml_table_callback (const char *name, value_t value, /* {{{ */
309 time_t current_time, void *user_data)
310 {
311 translation_table_ptr_t *table = (translation_table_ptr_t *) user_data;
312 size_t i;
314 if (table == NULL)
315 return (-1);
317 for (i = 0; i < table->table_length; i++)
318 {
319 if (strcmp (table->table[i].xml_name, name) != 0)
320 continue;
322 submit (current_time,
323 table->plugin_instance,
324 table->table[i].type,
325 table->table[i].type_instance,
326 value);
327 break;
328 }
330 return (0);
331 } /* }}} int bind_xml_table_callback */
333 /*
334 * Callback, that's used for lists.
335 * (Plugin instance and type are fixed, xml name is used as type instance.)
336 */
337 static int bind_xml_list_callback (const char *name, /* {{{ */
338 value_t value, time_t current_time, void *user_data)
339 {
340 list_info_ptr_t *list_info = (list_info_ptr_t *) user_data;
342 if (list_info == NULL)
343 return (-1);
345 submit (current_time,
346 list_info->plugin_instance,
347 list_info->type,
348 /* type instance = */ name,
349 value);
351 return (0);
352 } /* }}} int bind_xml_list_callback */
354 static int bind_xml_read_derive (xmlDoc *doc, xmlNode *node, /* {{{ */
355 derive_t *ret_value)
356 {
357 char *str_ptr;
358 value_t value;
359 int status;
361 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
362 if (str_ptr == NULL)
363 {
364 ERROR ("bind plugin: bind_xml_read_derive: xmlNodeListGetString failed.");
365 return (-1);
366 }
368 status = parse_value (str_ptr, &value, DS_TYPE_DERIVE);
369 if (status != 0)
370 {
371 ERROR ("bind plugin: Parsing string \"%s\" to derive value failed.",
372 str_ptr);
373 xmlFree(str_ptr);
374 return (-1);
375 }
377 xmlFree(str_ptr);
378 *ret_value = value.derive;
379 return (0);
380 } /* }}} int bind_xml_read_derive */
382 static int bind_xml_read_gauge (xmlDoc *doc, xmlNode *node, /* {{{ */
383 gauge_t *ret_value)
384 {
385 char *str_ptr, *end_ptr;
386 double value;
388 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
389 if (str_ptr == NULL)
390 {
391 ERROR ("bind plugin: bind_xml_read_gauge: xmlNodeListGetString failed.");
392 return (-1);
393 }
395 errno = 0;
396 value = strtod (str_ptr, &end_ptr);
397 xmlFree(str_ptr);
398 if (str_ptr == end_ptr || errno)
399 {
400 if (errno && (value < 0))
401 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed with underflow.");
402 else if (errno && (value > 0))
403 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed with overflow.");
404 else
405 ERROR ("bind plugin: bind_xml_read_gauge: strtod failed.");
406 return (-1);
407 }
409 *ret_value = (gauge_t) value;
410 return (0);
411 } /* }}} int bind_xml_read_gauge */
413 static int bind_xml_read_timestamp (const char *xpath_expression, /* {{{ */
414 xmlDoc *doc, xmlXPathContext *xpathCtx, time_t *ret_value)
415 {
416 xmlXPathObject *xpathObj = NULL;
417 xmlNode *node;
418 char *str_ptr;
419 char *tmp;
420 struct tm tm;
422 xpathObj = xmlXPathEvalExpression (BAD_CAST xpath_expression, xpathCtx);
423 if (xpathObj == NULL)
424 {
425 ERROR ("bind plugin: Unable to evaluate XPath expression `%s'.",
426 xpath_expression);
427 return (-1);
428 }
430 if ((xpathObj->nodesetval == NULL) || (xpathObj->nodesetval->nodeNr < 1))
431 {
432 xmlXPathFreeObject (xpathObj);
433 return (-1);
434 }
436 if (xpathObj->nodesetval->nodeNr != 1)
437 {
438 NOTICE ("bind plugin: Evaluating the XPath expression `%s' returned "
439 "%i nodes. Only handling the first one.",
440 xpath_expression, xpathObj->nodesetval->nodeNr);
441 }
443 node = xpathObj->nodesetval->nodeTab[0];
445 if (node->xmlChildrenNode == NULL)
446 {
447 ERROR ("bind plugin: bind_xml_read_timestamp: "
448 "node->xmlChildrenNode == NULL");
449 xmlXPathFreeObject (xpathObj);
450 return (-1);
451 }
453 str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
454 if (str_ptr == NULL)
455 {
456 ERROR ("bind plugin: bind_xml_read_timestamp: xmlNodeListGetString failed.");
457 xmlXPathFreeObject (xpathObj);
458 return (-1);
459 }
461 memset (&tm, 0, sizeof(tm));
462 tmp = strptime (str_ptr, "%Y-%m-%dT%T", &tm);
463 xmlFree(str_ptr);
464 if (tmp == NULL)
465 {
466 ERROR ("bind plugin: bind_xml_read_timestamp: strptime failed.");
467 xmlXPathFreeObject (xpathObj);
468 return (-1);
469 }
471 *ret_value = mktime(&tm);
473 xmlXPathFreeObject (xpathObj);
474 return (0);
475 } /* }}} int bind_xml_read_timestamp */
477 /*
478 * bind_parse_generic_name_value
479 *
480 * Reads statistics in the form:
481 * <foo>
482 * <name>QUERY</name>
483 * <counter>123</counter>
484 * </foo>
485 */
486 static int bind_parse_generic_name_value (const char *xpath_expression, /* {{{ */
487 list_callback_t list_callback,
488 void *user_data,
489 xmlDoc *doc, xmlXPathContext *xpathCtx,
490 time_t current_time, int ds_type)
491 {
492 xmlXPathObject *xpathObj = NULL;
493 int num_entries;
494 int i;
496 xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
497 if (xpathObj == NULL)
498 {
499 ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
500 xpath_expression);
501 return (-1);
502 }
504 num_entries = 0;
505 /* Iterate over all matching nodes. */
506 for (i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++)
507 {
508 xmlNode *name_node = NULL;
509 xmlNode *counter = NULL;
510 xmlNode *parent;
511 xmlNode *child;
513 parent = xpathObj->nodesetval->nodeTab[i];
514 DEBUG ("bind plugin: bind_parse_generic_name_value: parent->name = %s;",
515 (char *) parent->name);
517 /* Iterate over all child nodes. */
518 for (child = parent->xmlChildrenNode;
519 child != NULL;
520 child = child->next)
521 {
522 if (child->type != XML_ELEMENT_NODE)
523 continue;
525 if (xmlStrcmp (BAD_CAST "name", child->name) == 0)
526 name_node = child;
527 else if (xmlStrcmp (BAD_CAST "counter", child->name) == 0)
528 counter = child;
529 }
531 if ((name_node != NULL) && (counter != NULL))
532 {
533 char *name = (char *) xmlNodeListGetString (doc,
534 name_node->xmlChildrenNode, 1);
535 value_t value;
536 int status;
538 if (ds_type == DS_TYPE_GAUGE)
539 status = bind_xml_read_gauge (doc, counter, &value.gauge);
540 else
541 status = bind_xml_read_derive (doc, counter, &value.derive);
542 if (status != 0)
543 continue;
545 status = (*list_callback) (name, value, current_time, user_data);
546 if (status == 0)
547 num_entries++;
549 xmlFree (name);
550 }
551 }
553 DEBUG ("bind plugin: Found %d %s for XPath expression `%s'",
554 num_entries, (num_entries == 1) ? "entry" : "entries",
555 xpath_expression);
557 xmlXPathFreeObject(xpathObj);
559 return (0);
560 } /* }}} int bind_parse_generic_name_value */
562 /*
563 * bind_parse_generic_value_list
564 *
565 * Reads statistics in the form:
566 * <foo>
567 * <name0>123</name0>
568 * <name1>234</name1>
569 * <name2>345</name2>
570 * :
571 * </foo>
572 */
573 static int bind_parse_generic_value_list (const char *xpath_expression, /* {{{ */
574 list_callback_t list_callback,
575 void *user_data,
576 xmlDoc *doc, xmlXPathContext *xpathCtx,
577 time_t current_time, int ds_type)
578 {
579 xmlXPathObject *xpathObj = NULL;
580 int num_entries;
581 int i;
583 xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
584 if (xpathObj == NULL)
585 {
586 ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
587 xpath_expression);
588 return (-1);
589 }
591 num_entries = 0;
592 /* Iterate over all matching nodes. */
593 for (i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++)
594 {
595 xmlNode *child;
597 /* Iterate over all child nodes. */
598 for (child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode;
599 child != NULL;
600 child = child->next)
601 {
602 char *node_name;
603 value_t value;
604 int status;
606 if (child->type != XML_ELEMENT_NODE)
607 continue;
609 node_name = (char *) child->name;
611 if (ds_type == DS_TYPE_GAUGE)
612 status = bind_xml_read_gauge (doc, child, &value.gauge);
613 else
614 status = bind_xml_read_derive (doc, child, &value.derive);
615 if (status != 0)
616 continue;
618 status = (*list_callback) (node_name, value, current_time, user_data);
619 if (status == 0)
620 num_entries++;
621 }
622 }
624 DEBUG ("bind plugin: Found %d %s for XPath expression `%s'",
625 num_entries, (num_entries == 1) ? "entry" : "entries",
626 xpath_expression);
628 xmlXPathFreeObject(xpathObj);
630 return (0);
631 } /* }}} int bind_parse_generic_value_list */
633 /*
634 * bind_parse_generic_name_attr_value_list
635 *
636 * Reads statistics in the form:
637 * <foo>
638 * <counter name="name0">123</counter>
639 * <counter name="name1">234</counter>
640 * <counter name="name2">345</counter>
641 * :
642 * </foo>
643 */
644 static int bind_parse_generic_name_attr_value_list (const char *xpath_expression, /* {{{ */
645 list_callback_t list_callback,
646 void *user_data,
647 xmlDoc *doc, xmlXPathContext *xpathCtx,
648 time_t current_time, int ds_type)
649 {
650 xmlXPathObject *xpathObj = NULL;
651 int num_entries;
652 int i;
654 xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
655 if (xpathObj == NULL)
656 {
657 ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
658 xpath_expression);
659 return (-1);
660 }
662 num_entries = 0;
663 /* Iterate over all matching nodes. */
664 for (i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++)
665 {
666 xmlNode *child;
668 /* Iterate over all child nodes. */
669 for (child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode;
670 child != NULL;
671 child = child->next)
672 {
673 if (child->type != XML_ELEMENT_NODE)
674 continue;
676 if (strncmp ("counter", (char *) child->name, strlen ("counter")) != 0)
677 continue;
679 char *attr_name;
680 value_t value;
681 int status;
683 attr_name = (char *) xmlGetProp (child, BAD_CAST "name");
684 if (attr_name == NULL)
685 {
686 DEBUG ("bind plugin: found <counter> without name.");
687 continue;
688 }
689 if (ds_type == DS_TYPE_GAUGE)
690 status = bind_xml_read_gauge (doc, child, &value.gauge);
691 else
692 status = bind_xml_read_derive (doc, child, &value.derive);
693 if (status != 0)
694 continue;
696 status = (*list_callback) (attr_name, value, current_time, user_data);
697 if (status == 0)
698 num_entries++;
699 }
700 }
702 DEBUG ("bind plugin: Found %d %s for XPath expression `%s'",
703 num_entries, (num_entries == 1) ? "entry" : "entries",
704 xpath_expression);
706 xmlXPathFreeObject(xpathObj);
708 return (0);
709 } /* }}} int bind_parse_generic_name_attr_value_list */
711 static int bind_xml_stats_handle_zone (int version, xmlDoc *doc, /* {{{ */
712 xmlXPathContext *path_ctx, xmlNode *node, cb_view_t *view,
713 time_t current_time)
714 {
715 xmlXPathObject *path_obj;
716 char *zone_name = NULL;
717 int i;
718 size_t j;
720 if (version >= 3)
721 {
722 char *n = (char *) xmlGetProp (node, BAD_CAST "name");
723 char *c = (char *) xmlGetProp (node, BAD_CAST "rdataclass");
724 if (n && c)
725 {
726 zone_name = (char *) xmlMalloc(strlen(n) + strlen(c) + 2);
727 snprintf(zone_name, strlen(n) + strlen(c) + 2, "%s/%s", n, c);
728 }
729 xmlFree(n);
730 xmlFree(c);
731 }
732 else
733 {
734 path_obj = xmlXPathEvalExpression (BAD_CAST "name", path_ctx);
735 if (path_obj == NULL)
736 {
737 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
738 return (-1);
739 }
741 for (i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr); i++)
742 {
743 zone_name = (char *) xmlNodeListGetString (doc,
744 path_obj->nodesetval->nodeTab[i]->xmlChildrenNode, 1);
745 if (zone_name != NULL)
746 break;
747 }
748 xmlXPathFreeObject (path_obj);
749 }
751 if (zone_name == NULL)
752 {
753 ERROR ("bind plugin: Could not determine zone name.");
754 return (-1);
755 }
757 for (j = 0; j < view->zones_num; j++)
758 {
759 if (strcasecmp (zone_name, view->zones[j]) == 0)
760 break;
761 }
763 xmlFree (zone_name);
764 zone_name = NULL;
766 if (j >= view->zones_num)
767 return (0);
769 zone_name = view->zones[j];
771 DEBUG ("bind plugin: bind_xml_stats_handle_zone: Found zone `%s'.",
772 zone_name);
774 { /* Parse the <counters> tag {{{ */
775 char plugin_instance[DATA_MAX_NAME_LEN];
776 translation_table_ptr_t table_ptr =
777 {
778 nsstats_translation_table,
779 nsstats_translation_table_length,
780 plugin_instance
781 };
783 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-zone-%s",
784 view->name, zone_name);
786 if (version == 3)
787 {
788 list_info_ptr_t list_info =
789 {
790 plugin_instance,
791 /* type = */ "dns_qtype"
792 };
793 bind_parse_generic_name_attr_value_list (/* xpath = */ "counters[@type='rcode']",
794 /* callback = */ bind_xml_table_callback,
795 /* user_data = */ &table_ptr,
796 doc, path_ctx, current_time, DS_TYPE_COUNTER);
797 bind_parse_generic_name_attr_value_list (/* xpath = */ "counters[@type='qtype']",
798 /* callback = */ bind_xml_list_callback,
799 /* user_data = */ &list_info,
800 doc, path_ctx, current_time, DS_TYPE_COUNTER);
801 }
802 else
803 {
804 bind_parse_generic_value_list (/* xpath = */ "counters",
805 /* callback = */ bind_xml_table_callback,
806 /* user_data = */ &table_ptr,
807 doc, path_ctx, current_time, DS_TYPE_COUNTER);
808 }
809 } /* }}} */
811 return (0);
812 } /* }}} int bind_xml_stats_handle_zone */
814 static int bind_xml_stats_search_zones (int version, xmlDoc *doc, /* {{{ */
815 xmlXPathContext *path_ctx, xmlNode *node, cb_view_t *view,
816 time_t current_time)
817 {
818 xmlXPathObject *zone_nodes = NULL;
819 xmlXPathContext *zone_path_context;
820 int i;
822 zone_path_context = xmlXPathNewContext (doc);
823 if (zone_path_context == NULL)
824 {
825 ERROR ("bind plugin: xmlXPathNewContext failed.");
826 return (-1);
827 }
829 zone_nodes = xmlXPathEvalExpression (BAD_CAST "zones/zone", path_ctx);
830 if (zone_nodes == NULL)
831 {
832 ERROR ("bind plugin: Cannot find any <view> tags.");
833 xmlXPathFreeContext (zone_path_context);
834 return (-1);
835 }
837 for (i = 0; i < zone_nodes->nodesetval->nodeNr; i++)
838 {
839 node = zone_nodes->nodesetval->nodeTab[i];
840 assert (node != NULL);
842 zone_path_context->node = node;
844 bind_xml_stats_handle_zone (version, doc, zone_path_context, node, view,
845 current_time);
846 }
848 xmlXPathFreeObject (zone_nodes);
849 xmlXPathFreeContext (zone_path_context);
850 return (0);
851 } /* }}} int bind_xml_stats_search_zones */
853 static int bind_xml_stats_handle_view (int version, xmlDoc *doc, /* {{{ */
854 xmlXPathContext *path_ctx, xmlNode *node, time_t current_time)
855 {
856 char *view_name = NULL;
857 cb_view_t *view;
858 int i;
859 size_t j;
861 if (version == 3)
862 {
863 view_name = (char*) xmlGetProp(node, BAD_CAST "name");
865 if (view_name == NULL)
866 {
867 ERROR ("bind plugin: Could not determine view name.");
868 return (-1);
869 }
871 for (j = 0; j < views_num; j++)
872 {
873 if (strcasecmp (view_name, views[j].name) == 0)
874 break;
875 }
877 xmlFree (view_name);
878 view_name = NULL;
879 }
880 else
881 {
882 xmlXPathObject *path_obj;
883 path_obj = xmlXPathEvalExpression (BAD_CAST "name", path_ctx);
884 if (path_obj == NULL)
885 {
886 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
887 return (-1);
888 }
890 for (i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr); i++)
891 {
892 view_name = (char *) xmlNodeListGetString (doc,
893 path_obj->nodesetval->nodeTab[i]->xmlChildrenNode, 1);
894 if (view_name != NULL)
895 break;
896 }
898 if (view_name == NULL)
899 {
900 ERROR ("bind plugin: Could not determine view name.");
901 xmlXPathFreeObject (path_obj);
902 return (-1);
903 }
905 for (j = 0; j < views_num; j++)
906 {
907 if (strcasecmp (view_name, views[j].name) == 0)
908 break;
909 }
911 xmlFree (view_name);
912 xmlXPathFreeObject (path_obj);
914 view_name = NULL;
915 path_obj = NULL;
916 }
919 if (j >= views_num)
920 return (0);
922 view = views + j;
924 DEBUG ("bind plugin: bind_xml_stats_handle_view: Found view `%s'.",
925 view->name);
927 if (view->qtypes != 0) /* {{{ */
928 {
929 char plugin_instance[DATA_MAX_NAME_LEN];
930 list_info_ptr_t list_info =
931 {
932 plugin_instance,
933 /* type = */ "dns_qtype"
934 };
936 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-qtypes",
937 view->name);
938 if (version == 3)
939 {
940 bind_parse_generic_name_attr_value_list (/* xpath = */ "counters[@type='resqtype']",
941 /* callback = */ bind_xml_list_callback,
942 /* user_data = */ &list_info,
943 doc, path_ctx, current_time, DS_TYPE_COUNTER);
944 }
945 else
946 {
947 bind_parse_generic_name_value (/* xpath = */ "rdtype",
948 /* callback = */ bind_xml_list_callback,
949 /* user_data = */ &list_info,
950 doc, path_ctx, current_time, DS_TYPE_COUNTER);
951 }
952 } /* }}} */
954 if (view->resolver_stats != 0) /* {{{ */
955 {
956 char plugin_instance[DATA_MAX_NAME_LEN];
957 translation_table_ptr_t table_ptr =
958 {
959 resstats_translation_table,
960 resstats_translation_table_length,
961 plugin_instance
962 };
964 ssnprintf (plugin_instance, sizeof (plugin_instance),
965 "%s-resolver_stats", view->name);
966 if (version == 3)
967 {
968 bind_parse_generic_name_attr_value_list ("counters[@type='resstats']",
969 /* callback = */ bind_xml_table_callback,
970 /* user_data = */ &table_ptr,
971 doc, path_ctx, current_time, DS_TYPE_COUNTER);
972 }
973 else
974 {
975 bind_parse_generic_name_value ("resstat",
976 /* callback = */ bind_xml_table_callback,
977 /* user_data = */ &table_ptr,
978 doc, path_ctx, current_time, DS_TYPE_COUNTER);
979 }
980 } /* }}} */
982 /* Record types in the cache */
983 if (view->cacherrsets != 0) /* {{{ */
984 {
985 char plugin_instance[DATA_MAX_NAME_LEN];
986 list_info_ptr_t list_info =
987 {
988 plugin_instance,
989 /* type = */ "dns_qtype_cached"
990 };
992 ssnprintf (plugin_instance, sizeof (plugin_instance), "%s-cache_rr_sets",
993 view->name);
995 bind_parse_generic_name_value (/* xpath = */ "cache/rrset",
996 /* callback = */ bind_xml_list_callback,
997 /* user_data = */ &list_info,
998 doc, path_ctx, current_time, DS_TYPE_GAUGE);
999 } /* }}} */
1001 if (view->zones_num > 0)
1002 bind_xml_stats_search_zones (version, doc, path_ctx, node, view,
1003 current_time);
1005 return (0);
1006 } /* }}} int bind_xml_stats_handle_view */
1008 static int bind_xml_stats_search_views (int version, xmlDoc *doc, /* {{{ */
1009 xmlXPathContext *xpathCtx, xmlNode *statsnode, time_t current_time)
1010 {
1011 xmlXPathObject *view_nodes = NULL;
1012 xmlXPathContext *view_path_context;
1013 int i;
1015 view_path_context = xmlXPathNewContext (doc);
1016 if (view_path_context == NULL)
1017 {
1018 ERROR ("bind plugin: xmlXPathNewContext failed.");
1019 return (-1);
1020 }
1022 view_nodes = xmlXPathEvalExpression (BAD_CAST "views/view", xpathCtx);
1023 if (view_nodes == NULL)
1024 {
1025 ERROR ("bind plugin: Cannot find any <view> tags.");
1026 xmlXPathFreeContext (view_path_context);
1027 return (-1);
1028 }
1030 for (i = 0; i < view_nodes->nodesetval->nodeNr; i++)
1031 {
1032 xmlNode *node;
1034 node = view_nodes->nodesetval->nodeTab[i];
1035 assert (node != NULL);
1037 view_path_context->node = node;
1039 bind_xml_stats_handle_view (version, doc, view_path_context, node,
1040 current_time);
1041 }
1043 xmlXPathFreeObject (view_nodes);
1044 xmlXPathFreeContext (view_path_context);
1045 return (0);
1046 } /* }}} int bind_xml_stats_search_views */
1048 static void bind_xml_stats_v3 (xmlDoc *doc, /* {{{ */
1049 xmlXPathContext *xpathCtx, xmlNode *statsnode, time_t current_time)
1050 {
1051 /* XPath: server/counters[@type='opcode']
1052 * Variables: QUERY, IQUERY, NOTIFY, UPDATE, ...
1053 * Layout v3:
1054 * <counters type="opcode">
1055 * <counter name="A">1</counter>
1056 * :
1057 * </counters>
1058 */
1059 if (global_opcodes != 0)
1060 {
1061 list_info_ptr_t list_info =
1062 {
1063 /* plugin instance = */ "global-opcodes",
1064 /* type = */ "dns_opcode"
1065 };
1066 bind_parse_generic_name_attr_value_list (/* xpath = */ "server/counters[@type='opcode']",
1067 /* callback = */ bind_xml_list_callback,
1068 /* user_data = */ &list_info,
1069 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1070 }
1072 /* XPath: server/counters[@type='qtype']
1073 * Variables: RESERVED0, A, NS, CNAME, SOA, MR, PTR, HINFO, MX, TXT, RP,
1074 * X25, PX, AAAA, LOC, SRV, NAPTR, A6, DS, RRSIG, NSEC, DNSKEY,
1075 * SPF, TKEY, IXFR, AXFR, ANY, ..., Others
1076 * Layout v3:
1077 * <counters type="opcode">
1078 * <counter name="A">1</counter>
1079 * :
1080 * </counters>
1081 */
1082 if (global_qtypes != 0)
1083 {
1084 list_info_ptr_t list_info =
1085 {
1086 /* plugin instance = */ "global-qtypes",
1087 /* type = */ "dns_qtype"
1088 };
1090 bind_parse_generic_name_attr_value_list (/* xpath = */ "server/counters[@type='qtype']",
1091 /* callback = */ bind_xml_list_callback,
1092 /* user_data = */ &list_info,
1093 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1094 }
1096 /* XPath: server/counters[@type='nsstat']
1097 * Variables: Requestv4, Requestv6, ReqEdns0, ReqBadEDNSVer, ReqTSIG,
1098 * ReqSIG0, ReqBadSIG, ReqTCP, AuthQryRej, RecQryRej, XfrRej,
1099 * UpdateRej, Response, TruncatedResp, RespEDNS0, RespTSIG,
1100 * RespSIG0, QrySuccess, QryAuthAns, QryNoauthAns, QryReferral,
1101 * QryNxrrset, QrySERVFAIL, QryFORMERR, QryNXDOMAIN, QryRecursion,
1102 * QryDuplicate, QryDropped, QryFailure, XfrReqDone, UpdateReqFwd,
1103 * UpdateRespFwd, UpdateFwdFail, UpdateDone, UpdateFail,
1104 * UpdateBadPrereq
1105 * Layout v3:
1106 * <counters type="nsstat"
1107 * <counter name="Requestv4">1</counter>
1108 * <counter name="Requestv6">0</counter>
1109 * :
1110 * </counter>
1111 */
1112 if (global_server_stats)
1113 {
1114 translation_table_ptr_t table_ptr =
1115 {
1116 nsstats_translation_table,
1117 nsstats_translation_table_length,
1118 /* plugin_instance = */ "global-server_stats"
1119 };
1121 bind_parse_generic_name_attr_value_list ("server/counters[@type='nsstat']",
1122 /* callback = */ bind_xml_table_callback,
1123 /* user_data = */ &table_ptr,
1124 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1125 }
1127 /* XPath: server/zonestats, server/zonestat, server/counters[@type='zonestat']
1128 * Variables: NotifyOutv4, NotifyOutv6, NotifyInv4, NotifyInv6, NotifyRej,
1129 * SOAOutv4, SOAOutv6, AXFRReqv4, AXFRReqv6, IXFRReqv4, IXFRReqv6,
1130 * XfrSuccess, XfrFail
1131 * Layout v3:
1132 * <counters type="zonestat"
1133 * <counter name="NotifyOutv4">0</counter>
1134 * <counter name="NotifyOutv6">0</counter>
1135 * :
1136 * </counter>
1137 */
1138 if (global_zone_maint_stats)
1139 {
1140 translation_table_ptr_t table_ptr =
1141 {
1142 zonestats_translation_table,
1143 zonestats_translation_table_length,
1144 /* plugin_instance = */ "global-zone_maint_stats"
1145 };
1147 bind_parse_generic_name_attr_value_list ("server/counters[@type='zonestat']",
1148 /* callback = */ bind_xml_table_callback,
1149 /* user_data = */ &table_ptr,
1150 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1151 }
1153 /* XPath: server/resstats, server/counters[@type='resstat']
1154 * Variables: Queryv4, Queryv6, Responsev4, Responsev6, NXDOMAIN, SERVFAIL,
1155 * FORMERR, OtherError, EDNS0Fail, Mismatch, Truncated, Lame,
1156 * Retry, GlueFetchv4, GlueFetchv6, GlueFetchv4Fail,
1157 * GlueFetchv6Fail, ValAttempt, ValOk, ValNegOk, ValFail
1158 * Layout v3:
1159 * <counters type="resstat"
1160 * <counter name="Queryv4">0</counter>
1161 * <counter name="Queryv6">0</counter>
1162 * :
1163 * </counter>
1164 */
1165 if (global_resolver_stats != 0)
1166 {
1167 translation_table_ptr_t table_ptr =
1168 {
1169 resstats_translation_table,
1170 resstats_translation_table_length,
1171 /* plugin_instance = */ "global-resolver_stats"
1172 };
1174 bind_parse_generic_name_attr_value_list ("server/counters[@type='resstat']",
1175 /* callback = */ bind_xml_table_callback,
1176 /* user_data = */ &table_ptr,
1177 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1178 }
1179 } /* }}} bind_xml_stats_v3 */
1181 static void bind_xml_stats_v1_v2 (int version, xmlDoc *doc, /* {{{ */
1182 xmlXPathContext *xpathCtx, xmlNode *statsnode, time_t current_time)
1183 {
1184 /* XPath: server/requests/opcode, server/counters[@type='opcode']
1185 * Variables: QUERY, IQUERY, NOTIFY, UPDATE, ...
1186 * Layout V1 and V2:
1187 * <opcode>
1188 * <name>A</name>
1189 * <counter>1</counter>
1190 * </opcode>
1191 * :
1192 */
1193 if (global_opcodes != 0)
1194 {
1195 list_info_ptr_t list_info =
1196 {
1197 /* plugin instance = */ "global-opcodes",
1198 /* type = */ "dns_opcode"
1199 };
1201 bind_parse_generic_name_value (/* xpath = */ "server/requests/opcode",
1202 /* callback = */ bind_xml_list_callback,
1203 /* user_data = */ &list_info,
1204 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1205 }
1207 /* XPath: server/queries-in/rdtype, server/counters[@type='qtype']
1208 * Variables: RESERVED0, A, NS, CNAME, SOA, MR, PTR, HINFO, MX, TXT, RP,
1209 * X25, PX, AAAA, LOC, SRV, NAPTR, A6, DS, RRSIG, NSEC, DNSKEY,
1210 * SPF, TKEY, IXFR, AXFR, ANY, ..., Others
1211 * Layout v1 or v2:
1212 * <rdtype>
1213 * <name>A</name>
1214 * <counter>1</counter>
1215 * </rdtype>
1216 * :
1217 */
1218 if (global_qtypes != 0)
1219 {
1220 list_info_ptr_t list_info =
1221 {
1222 /* plugin instance = */ "global-qtypes",
1223 /* type = */ "dns_qtype"
1224 };
1226 bind_parse_generic_name_value (/* xpath = */ "server/queries-in/rdtype",
1227 /* callback = */ bind_xml_list_callback,
1228 /* user_data = */ &list_info,
1229 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1230 }
1232 /* XPath: server/nsstats, server/nsstat, server/counters[@type='nsstat']
1233 * Variables: Requestv4, Requestv6, ReqEdns0, ReqBadEDNSVer, ReqTSIG,
1234 * ReqSIG0, ReqBadSIG, ReqTCP, AuthQryRej, RecQryRej, XfrRej,
1235 * UpdateRej, Response, TruncatedResp, RespEDNS0, RespTSIG,
1236 * RespSIG0, QrySuccess, QryAuthAns, QryNoauthAns, QryReferral,
1237 * QryNxrrset, QrySERVFAIL, QryFORMERR, QryNXDOMAIN, QryRecursion,
1238 * QryDuplicate, QryDropped, QryFailure, XfrReqDone, UpdateReqFwd,
1239 * UpdateRespFwd, UpdateFwdFail, UpdateDone, UpdateFail,
1240 * UpdateBadPrereq
1241 * Layout v1:
1242 * <nsstats>
1243 * <Requestv4>1</Requestv4>
1244 * <Requestv6>0</Requestv6>
1245 * :
1246 * </nsstats>
1247 * Layout v2:
1248 * <nsstat>
1249 * <name>Requestv4</name>
1250 * <counter>1</counter>
1251 * </nsstat>
1252 * <nsstat>
1253 * <name>Requestv6</name>
1254 * <counter>0</counter>
1255 * </nsstat>
1256 * :
1257 */
1258 if (global_server_stats)
1259 {
1260 translation_table_ptr_t table_ptr =
1261 {
1262 nsstats_translation_table,
1263 nsstats_translation_table_length,
1264 /* plugin_instance = */ "global-server_stats"
1265 };
1267 if (version == 1)
1268 {
1269 bind_parse_generic_value_list ("server/nsstats",
1270 /* callback = */ bind_xml_table_callback,
1271 /* user_data = */ &table_ptr,
1272 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1273 }
1274 else
1275 {
1276 bind_parse_generic_name_value ("server/nsstat",
1277 /* callback = */ bind_xml_table_callback,
1278 /* user_data = */ &table_ptr,
1279 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1280 }
1281 }
1283 /* XPath: server/zonestats, server/zonestat, server/counters[@type='zonestat']
1284 * Variables: NotifyOutv4, NotifyOutv6, NotifyInv4, NotifyInv6, NotifyRej,
1285 * SOAOutv4, SOAOutv6, AXFRReqv4, AXFRReqv6, IXFRReqv4, IXFRReqv6,
1286 * XfrSuccess, XfrFail
1287 * Layout v1:
1288 * <zonestats>
1289 * <NotifyOutv4>0</NotifyOutv4>
1290 * <NotifyOutv6>0</NotifyOutv6>
1291 * :
1292 * </zonestats>
1293 * Layout v2:
1294 * <zonestat>
1295 * <name>NotifyOutv4</name>
1296 * <counter>0</counter>
1297 * </zonestat>
1298 * <zonestat>
1299 * <name>NotifyOutv6</name>
1300 * <counter>0</counter>
1301 * </zonestat>
1302 * :
1303 */
1304 if (global_zone_maint_stats)
1305 {
1306 translation_table_ptr_t table_ptr =
1307 {
1308 zonestats_translation_table,
1309 zonestats_translation_table_length,
1310 /* plugin_instance = */ "global-zone_maint_stats"
1311 };
1313 if (version == 1)
1314 {
1315 bind_parse_generic_value_list ("server/zonestats",
1316 /* callback = */ bind_xml_table_callback,
1317 /* user_data = */ &table_ptr,
1318 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1319 }
1320 else
1321 {
1322 bind_parse_generic_name_value ("server/zonestat",
1323 /* callback = */ bind_xml_table_callback,
1324 /* user_data = */ &table_ptr,
1325 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1326 }
1327 }
1329 /* XPath: server/resstats, server/counters[@type='resstat']
1330 * Variables: Queryv4, Queryv6, Responsev4, Responsev6, NXDOMAIN, SERVFAIL,
1331 * FORMERR, OtherError, EDNS0Fail, Mismatch, Truncated, Lame,
1332 * Retry, GlueFetchv4, GlueFetchv6, GlueFetchv4Fail,
1333 * GlueFetchv6Fail, ValAttempt, ValOk, ValNegOk, ValFail
1334 * Layout v1:
1335 * <resstats>
1336 * <Queryv4>0</Queryv4>
1337 * <Queryv6>0</Queryv6>
1338 * :
1339 * </resstats>
1340 * Layout v2:
1341 * <resstat>
1342 * <name>Queryv4</name>
1343 * <counter>0</counter>
1344 * </resstat>
1345 * <resstat>
1346 * <name>Queryv6</name>
1347 * <counter>0</counter>
1348 * </resstat>
1349 * :
1350 */
1351 if (global_resolver_stats != 0)
1352 {
1353 translation_table_ptr_t table_ptr =
1354 {
1355 resstats_translation_table,
1356 resstats_translation_table_length,
1357 /* plugin_instance = */ "global-resolver_stats"
1358 };
1360 if (version == 1)
1361 {
1362 bind_parse_generic_value_list ("server/resstats",
1363 /* callback = */ bind_xml_table_callback,
1364 /* user_data = */ &table_ptr,
1365 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1366 }
1367 else
1368 {
1369 bind_parse_generic_name_value ("server/resstat",
1370 /* callback = */ bind_xml_table_callback,
1371 /* user_data = */ &table_ptr,
1372 doc, xpathCtx, current_time, DS_TYPE_COUNTER);
1373 }
1374 }
1375 } /* }}} bind_xml_stats_v1_v2 */
1377 static int bind_xml_stats (int version, xmlDoc *doc, /* {{{ */
1378 xmlXPathContext *xpathCtx, xmlNode *statsnode)
1379 {
1380 time_t current_time = 0;
1381 int status;
1383 xpathCtx->node = statsnode;
1385 /* TODO: Check `server/boot-time' to recognize server restarts. */
1387 status = bind_xml_read_timestamp ("server/current-time",
1388 doc, xpathCtx, ¤t_time);
1389 if (status != 0)
1390 {
1391 ERROR ("bind plugin: Reading `server/current-time' failed.");
1392 return (-1);
1393 }
1394 DEBUG ("bind plugin: Current server time is %i.", (int) current_time);
1396 if (version == 3)
1397 {
1398 bind_xml_stats_v3(doc, xpathCtx, statsnode, current_time);
1399 }
1400 else
1401 {
1402 bind_xml_stats_v1_v2(version, doc, xpathCtx, statsnode, current_time);
1403 }
1405 /* XPath: memory/summary
1406 * Variables: TotalUse, InUse, BlockSize, ContextSize, Lost
1407 * Layout: v2 and v3:
1408 * <summary>
1409 * <TotalUse>6587096</TotalUse>
1410 * <InUse>1345424</InUse>
1411 * <BlockSize>5505024</BlockSize>
1412 * <ContextSize>3732456</ContextSize>
1413 * <Lost>0</Lost>
1414 * </summary>
1415 */
1416 if (global_memory_stats != 0)
1417 {
1418 translation_table_ptr_t table_ptr =
1419 {
1420 memsummary_translation_table,
1421 memsummary_translation_table_length,
1422 /* plugin_instance = */ "global-memory_stats"
1423 };
1425 bind_parse_generic_value_list ("memory/summary",
1426 /* callback = */ bind_xml_table_callback,
1427 /* user_data = */ &table_ptr,
1428 doc, xpathCtx, current_time, DS_TYPE_GAUGE);
1429 }
1431 if (views_num > 0)
1432 bind_xml_stats_search_views (version, doc, xpathCtx, statsnode,
1433 current_time);
1435 return 0;
1436 } /* }}} int bind_xml_stats */
1438 static int bind_xml (const char *data) /* {{{ */
1439 {
1440 xmlDoc *doc = NULL;
1441 xmlXPathContext *xpathCtx = NULL;
1442 xmlXPathObject *xpathObj = NULL;
1443 int ret = -1;
1444 int i;
1446 doc = xmlParseMemory (data, strlen (data));
1447 if (doc == NULL)
1448 {
1449 ERROR ("bind plugin: xmlParseMemory failed.");
1450 return (-1);
1451 }
1453 xpathCtx = xmlXPathNewContext (doc);
1454 if (xpathCtx == NULL)
1455 {
1456 ERROR ("bind plugin: xmlXPathNewContext failed.");
1457 xmlFreeDoc (doc);
1458 return (-1);
1459 }
1461 //
1462 // version 3.* of statistics XML (since BIND9.9)
1463 //
1465 xpathObj = xmlXPathEvalExpression (BAD_CAST "/statistics", xpathCtx);
1466 if (xpathObj == NULL || xpathObj->nodesetval == NULL || xpathObj->nodesetval->nodeNr == 0)
1467 {
1468 DEBUG ("bind plugin: Statistics appears not to be v3");
1469 // we will fallback to v1 or v2 detection
1470 if (xpathObj != NULL) { xmlXPathFreeObject (xpathObj); }
1471 }
1472 else
1473 {
1474 for (i = 0; i < xpathObj->nodesetval->nodeNr; i++)
1475 {
1476 xmlNode *node;
1477 char *attr_version;
1479 node = xpathObj->nodesetval->nodeTab[i];
1480 assert (node != NULL);
1482 attr_version = (char *) xmlGetProp (node, BAD_CAST "version");
1483 if (attr_version == NULL)
1484 {
1485 NOTICE ("bind plugin: Found <statistics> tag doesn't have a "
1486 "`version' attribute.");
1487 continue;
1488 }
1489 DEBUG ("bind plugin: Found: <statistics version=\"%s\">", attr_version);
1491 if (strncmp ("3.", attr_version, strlen ("3.")) != 0)
1492 {
1493 /* TODO: Use the complaint mechanism here. */
1494 NOTICE ("bind plugin: Found <statistics> tag with version `%s'. "
1495 "Unfortunately I have no clue how to parse that. "
1496 "Please open a bug report for this.", attr_version);
1497 xmlFree (attr_version);
1498 continue;
1499 }
1500 ret = bind_xml_stats (3, doc, xpathCtx, node);
1502 xmlFree (attr_version);
1503 /* One <statistics> node ought to be enough. */
1504 break;
1505 }
1507 // we are finished, early-return
1508 xmlXPathFreeObject (xpathObj);
1509 xmlXPathFreeContext (xpathCtx);
1510 xmlFreeDoc (doc);
1512 return (ret);
1513 }
1515 //
1516 // versions 1.* or 2.* of statistics XML
1517 //
1519 xpathObj = xmlXPathEvalExpression (BAD_CAST "/isc/bind/statistics", xpathCtx);
1520 if (xpathObj == NULL)
1521 {
1522 ERROR ("bind plugin: Cannot find the <statistics> tag.");
1523 xmlXPathFreeContext (xpathCtx);
1524 xmlFreeDoc (doc);
1525 return (-1);
1526 }
1527 else if (xpathObj->nodesetval == NULL)
1528 {
1529 ERROR ("bind plugin: xmlXPathEvalExpression failed.");
1530 xmlXPathFreeObject (xpathObj);
1531 xmlXPathFreeContext (xpathCtx);
1532 xmlFreeDoc (doc);
1533 return (-1);
1534 }
1536 for (i = 0; i < xpathObj->nodesetval->nodeNr; i++)
1537 {
1538 xmlNode *node;
1539 char *attr_version;
1540 int parsed_version = 0;
1542 node = xpathObj->nodesetval->nodeTab[i];
1543 assert (node != NULL);
1545 attr_version = (char *) xmlGetProp (node, BAD_CAST "version");
1546 if (attr_version == NULL)
1547 {
1548 NOTICE ("bind plugin: Found <statistics> tag doesn't have a "
1549 "`version' attribute.");
1550 continue;
1551 }
1552 DEBUG ("bind plugin: Found: <statistics version=\"%s\">", attr_version);
1554 /* At the time this plugin was written, version "1.0" was used by
1555 * BIND 9.5.0, version "2.0" was used by BIND 9.5.1 and 9.6.0. We assume
1556 * that "1.*" and "2.*" don't introduce structural changes, so we just
1557 * check for the first two characters here. */
1558 if (strncmp ("1.", attr_version, strlen ("1.")) == 0)
1559 parsed_version = 1;
1560 else if (strncmp ("2.", attr_version, strlen ("2.")) == 0)
1561 parsed_version = 2;
1562 else
1563 {
1564 /* TODO: Use the complaint mechanism here. */
1565 NOTICE ("bind plugin: Found <statistics> tag with version `%s'. "
1566 "Unfortunately I have no clue how to parse that. "
1567 "Please open a bug report for this.", attr_version);
1568 xmlFree (attr_version);
1569 continue;
1570 }
1572 ret = bind_xml_stats (parsed_version,
1573 doc, xpathCtx, node);
1575 xmlFree (attr_version);
1576 /* One <statistics> node ought to be enough. */
1577 break;
1578 }
1580 xmlXPathFreeObject (xpathObj);
1581 xmlXPathFreeContext (xpathCtx);
1582 xmlFreeDoc (doc);
1584 return (ret);
1585 } /* }}} int bind_xml */
1587 static int bind_config_set_bool (const char *name, int *var, /* {{{ */
1588 oconfig_item_t *ci)
1589 {
1590 if ((ci->values_num != 1) || ( ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
1591 {
1592 WARNING ("bind plugin: The `%s' option needs "
1593 "exactly one boolean argument.", name);
1594 return (-1);
1595 }
1597 if (ci->values[0].value.boolean)
1598 *var = 1;
1599 else
1600 *var = 0;
1601 return 0;
1602 } /* }}} int bind_config_set_bool */
1604 static int bind_config_add_view_zone (cb_view_t *view, /* {{{ */
1605 oconfig_item_t *ci)
1606 {
1607 char **tmp;
1609 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1610 {
1611 WARNING ("bind plugin: The `Zone' option needs "
1612 "exactly one string argument.");
1613 return (-1);
1614 }
1616 tmp = (char **) realloc (view->zones,
1617 sizeof (char *) * (view->zones_num + 1));
1618 if (tmp == NULL)
1619 {
1620 ERROR ("bind plugin: realloc failed.");
1621 return (-1);
1622 }
1623 view->zones = tmp;
1625 view->zones[view->zones_num] = strdup (ci->values[0].value.string);
1626 if (view->zones[view->zones_num] == NULL)
1627 {
1628 ERROR ("bind plugin: strdup failed.");
1629 return (-1);
1630 }
1631 view->zones_num++;
1633 return (0);
1634 } /* }}} int bind_config_add_view_zone */
1636 static int bind_config_add_view (oconfig_item_t *ci) /* {{{ */
1637 {
1638 cb_view_t *tmp;
1639 int i;
1641 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1642 {
1643 WARNING ("bind plugin: `View' blocks need exactly one string argument.");
1644 return (-1);
1645 }
1647 tmp = (cb_view_t *) realloc (views, sizeof (*views) * (views_num + 1));
1648 if (tmp == NULL)
1649 {
1650 ERROR ("bind plugin: realloc failed.");
1651 return (-1);
1652 }
1653 views = tmp;
1654 tmp = views + views_num;
1656 memset (tmp, 0, sizeof (*tmp));
1657 tmp->qtypes = 1;
1658 tmp->resolver_stats = 1;
1659 tmp->cacherrsets = 1;
1660 tmp->zones = NULL;
1661 tmp->zones_num = 0;
1663 tmp->name = strdup (ci->values[0].value.string);
1664 if (tmp->name == NULL)
1665 {
1666 ERROR ("bind plugin: strdup failed.");
1667 sfree (views);
1668 return (-1);
1669 }
1671 for (i = 0; i < ci->children_num; i++)
1672 {
1673 oconfig_item_t *child = ci->children + i;
1675 if (strcasecmp ("QTypes", child->key) == 0)
1676 bind_config_set_bool ("QTypes", &tmp->qtypes, child);
1677 else if (strcasecmp ("ResolverStats", child->key) == 0)
1678 bind_config_set_bool ("ResolverStats", &tmp->resolver_stats, child);
1679 else if (strcasecmp ("CacheRRSets", child->key) == 0)
1680 bind_config_set_bool ("CacheRRSets", &tmp->cacherrsets, child);
1681 else if (strcasecmp ("Zone", child->key) == 0)
1682 bind_config_add_view_zone (tmp, child);
1683 else
1684 {
1685 WARNING ("bind plugin: Unknown configuration option "
1686 "`%s' in view `%s' will be ignored.", child->key, tmp->name);
1687 }
1688 } /* for (i = 0; i < ci->children_num; i++) */
1690 views_num++;
1691 return (0);
1692 } /* }}} int bind_config_add_view */
1694 static int bind_config (oconfig_item_t *ci) /* {{{ */
1695 {
1696 int i;
1698 for (i = 0; i < ci->children_num; i++)
1699 {
1700 oconfig_item_t *child = ci->children + i;
1702 if (strcasecmp ("Url", child->key) == 0) {
1703 if ((child->values_num != 1) || (child->values[0].type != OCONFIG_TYPE_STRING))
1704 {
1705 WARNING ("bind plugin: The `Url' option needs "
1706 "exactly one string argument.");
1707 return (-1);
1708 }
1710 sfree (url);
1711 url = strdup (child->values[0].value.string);
1712 } else if (strcasecmp ("OpCodes", child->key) == 0)
1713 bind_config_set_bool ("OpCodes", &global_opcodes, child);
1714 else if (strcasecmp ("QTypes", child->key) == 0)
1715 bind_config_set_bool ("QTypes", &global_qtypes, child);
1716 else if (strcasecmp ("ServerStats", child->key) == 0)
1717 bind_config_set_bool ("ServerStats", &global_server_stats, child);
1718 else if (strcasecmp ("ZoneMaintStats", child->key) == 0)
1719 bind_config_set_bool ("ZoneMaintStats", &global_zone_maint_stats, child);
1720 else if (strcasecmp ("ResolverStats", child->key) == 0)
1721 bind_config_set_bool ("ResolverStats", &global_resolver_stats, child);
1722 else if (strcasecmp ("MemoryStats", child->key) == 0)
1723 bind_config_set_bool ("MemoryStats", &global_memory_stats, child);
1724 else if (strcasecmp ("View", child->key) == 0)
1725 bind_config_add_view (child);
1726 else if (strcasecmp ("ParseTime", child->key) == 0)
1727 cf_util_get_boolean (child, &config_parse_time);
1728 else if (strcasecmp ("Timeout", child->key) == 0)
1729 cf_util_get_int (child, &timeout);
1730 else
1731 {
1732 WARNING ("bind plugin: Unknown configuration option "
1733 "`%s' will be ignored.", child->key);
1734 }
1735 }
1737 return (0);
1738 } /* }}} int bind_config */
1740 static int bind_init (void) /* {{{ */
1741 {
1742 if (curl != NULL)
1743 return (0);
1745 curl = curl_easy_init ();
1746 if (curl == NULL)
1747 {
1748 ERROR ("bind plugin: bind_init: curl_easy_init failed.");
1749 return (-1);
1750 }
1752 curl_easy_setopt (curl, CURLOPT_NOSIGNAL, 1L);
1753 curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, bind_curl_callback);
1754 curl_easy_setopt (curl, CURLOPT_USERAGENT, COLLECTD_USERAGENT);
1755 curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, bind_curl_error);
1756 curl_easy_setopt (curl, CURLOPT_URL, (url != NULL) ? url : BIND_DEFAULT_URL);
1757 curl_easy_setopt (curl, CURLOPT_FOLLOWLOCATION, 1L);
1758 curl_easy_setopt (curl, CURLOPT_MAXREDIRS, 50L);
1759 #ifdef HAVE_CURLOPT_TIMEOUT_MS
1760 curl_easy_setopt (curl, CURLOPT_TIMEOUT_MS, (timeout >= 0) ?
1761 (long) timeout : (long) CDTIME_T_TO_MS(plugin_get_interval()));
1762 #endif
1765 return (0);
1766 } /* }}} int bind_init */
1768 static int bind_read (void) /* {{{ */
1769 {
1770 int status;
1772 if (curl == NULL)
1773 {
1774 ERROR ("bind plugin: I don't have a CURL object.");
1775 return (-1);
1776 }
1778 bind_buffer_fill = 0;
1779 if (curl_easy_perform (curl) != CURLE_OK)
1780 {
1781 ERROR ("bind plugin: curl_easy_perform failed: %s",
1782 bind_curl_error);
1783 return (-1);
1784 }
1786 status = bind_xml (bind_buffer);
1787 if (status != 0)
1788 return (-1);
1789 else
1790 return (0);
1791 } /* }}} int bind_read */
1793 static int bind_shutdown (void) /* {{{ */
1794 {
1795 if (curl != NULL)
1796 {
1797 curl_easy_cleanup (curl);
1798 curl = NULL;
1799 }
1801 return (0);
1802 } /* }}} int bind_shutdown */
1804 void module_register (void)
1805 {
1806 plugin_register_complex_config ("bind", bind_config);
1807 plugin_register_init ("bind", bind_init);
1808 plugin_register_read ("bind", bind_read);
1809 plugin_register_shutdown ("bind", bind_shutdown);
1810 } /* void module_register */
1812 /* vim: set sw=2 sts=2 ts=8 et fdm=marker : */