--- /dev/null
+/**
+ * collectd - src/bind.c
+ * Copyright (C) 2009 Bruno Prémont
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; only version 2 of the License is applicable.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors:
+ * Bruno Prémont <bonbons at linux-vserver.org>
+ **/
+
+#define _ISOC99_SOURCE
+#define _XOPEN_SOURCE
+#define _BSD_SOURCE
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+#include "configfile.h"
+
+#include <curl/curl.h>
+#include <libxml/parser.h>
+#include <libxml/xpath.h>
+
+static char *url = NULL;
+static bool use_rrqueries_in = 1;
+static bool use_requests = 1;
+static bool use_query_results = 1;
+static bool use_updates = 1;
+static bool use_zone_maint = 1;
+static bool use_resolver = 1;
+static char *srv_boot_ts = NULL;
+
+static CURL *curl = NULL;
+
+static char *bind_buffer = NULL;
+static size_t bind_buffer_size = 0;
+static size_t bind_buffer_fill = 0;
+static char bind_curl_error[CURL_ERROR_SIZE];
+
+static const char *config_keys[] =
+{
+ "URL",
+ "RRQueriesIn",
+ "Requests"
+ "QueryResults",
+ "Updates",
+ "ZoneMaintenance",
+ "Resolver",
+};
+static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
+
+static void submit_counter(time_t ts, const char *plugin_instance, const char *type,
+ const char *type_instance, counter_t value)
+{
+ value_t values[1];
+ value_list_t vl = VALUE_LIST_INIT;
+ char *p;
+
+ values[0].counter = value;
+
+ vl.values = values;
+ vl.values_len = 1;
+ vl.time = ts == 0 ? time(NULL) : ts;
+ sstrncpy(vl.host, hostname_g, sizeof(vl.host));
+ sstrncpy(vl.plugin, "bind", sizeof(vl.plugin));
+ if (plugin_instance) {
+ sstrncpy(vl.plugin_instance, plugin_instance,
+ sizeof(vl.plugin_instance));
+ for (p = vl.type_instance; *p; p++)
+ if ((*p < 'a' || *p > 'z') && (*p < 'A' || *p > 'Z') && (*p < '0' || *p > '9') && *p != '_')
+ *p = '_';
+ }
+ sstrncpy(vl.type, type, sizeof(vl.type));
+ if (type_instance) {
+ sstrncpy(vl.type_instance, type_instance,
+ sizeof(vl.type_instance));
+ for (p = vl.type_instance; *p; p++)
+ if ((*p < 'a' || *p > 'z') && (*p < 'A' || *p > 'Z') && (*p < '0' || *p > '9') && *p != '_')
+ *p = '_';
+ }
+ plugin_dispatch_values(&vl);
+} /* void submit_counter */
+
+static size_t bind_curl_callback (void *buf, size_t size, size_t nmemb,
+ void *stream)
+{
+ size_t len = size * nmemb;
+
+ if (len <= 0)
+ return (len);
+
+ if ((bind_buffer_fill + len) >= bind_buffer_size)
+ {
+ char *temp;
+
+ temp = realloc(bind_buffer, bind_buffer_fill + len + 1);
+ if (temp == NULL)
+ {
+ ERROR ("bind plugin: realloc failed.");
+ return (0);
+ }
+ bind_buffer = temp;
+ bind_buffer_size = bind_buffer_fill + len + 1;
+ }
+
+ memcpy (bind_buffer + bind_buffer_fill, (char *) buf, len);
+ bind_buffer_fill += len;
+ bind_buffer[bind_buffer_fill] = 0;
+
+ return (len);
+} /* size_t bind_curl_callback */
+
+static int bind_xml_read_counter (xmlDoc *doc, xmlNode *node,
+ counter_t *ret_value)
+{
+ char *str_ptr, *end_ptr;
+ long long int value;
+
+ str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
+ if (str_ptr == NULL)
+ {
+ ERROR ("bind plugin: bind_xml_read_int64: xmlNodeListGetString failed.");
+ return (-1);
+ }
+
+ errno = 0;
+ value = strtoll (str_ptr, &end_ptr, 10);
+ xmlFree(str_ptr);
+ if (str_ptr == end_ptr || errno)
+ {
+ if (errno && value == LLONG_MIN)
+ ERROR ("bind plugin: bind_xml_read_int64: strtoll failed with underflow.");
+ else if (errno && value == LLONG_MAX)
+ ERROR ("bind plugin: bind_xml_read_int64: strtoll failed with overflow.");
+ else
+ ERROR ("bind plugin: bind_xml_read_int64: strtoll failed.");
+ return (-1);
+ }
+
+ *ret_value = value;
+ return (0);
+} /* int bind_xml_read_counter */
+
+static int bind_xml_read_timestamp (xmlDoc *doc, xmlNode *node,
+ time_t *ret_value)
+{
+ char *str_ptr, *p;
+ struct tm tm;
+
+ str_ptr = (char *) xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
+ if (str_ptr == NULL)
+ {
+ ERROR ("bind plugin: bind_xml_read_int: xmlNodeListGetString failed.");
+ return (-1);
+ }
+
+ memset(&tm, 0, sizeof(tm));
+ p = strptime(str_ptr, "%Y-%m-%dT%T", &tm);
+ xmlFree(str_ptr);
+ if (p == NULL)
+ {
+ ERROR ("bind plugin: bind_xml_read_timestamp: strptime failed.");
+ return (-1);
+ }
+
+ *ret_value = timegm(&tm);
+ return (0);
+} /* int bind_xml_read_timestamp */
+
+/* Bind 9.5.x */
+static int bind_xml_stats_v1(xmlDoc *doc, xmlXPathContext *xpathCtx, xmlNode *statsnode)
+{
+ xmlXPathObjectPtr xpathObj = NULL;
+ time_t current_time;
+ int i;
+
+ xpathCtx->node = statsnode;
+
+ /* server/boot-time -- detect possible counter-resets
+ * Type: XML DateTime */
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "server/boot-time", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV1-boottime");
+ return -1;
+ } else if (xpathObj->nodesetval && xpathObj->nodesetval->nodeNr > 0) {
+ char *boot_tm = (char *) xmlNodeListGetString (doc, xpathObj->nodesetval->nodeTab[0]->xmlChildrenNode, 1);
+ if (srv_boot_ts == NULL || strcmp(srv_boot_ts, boot_tm) != 0) {
+ xmlFree(srv_boot_ts);
+ srv_boot_ts = boot_tm;
+ /* TODO: tell collectd that our counters got reset ... */
+ DEBUG ("bind plugin: Statv1: Server boot time: %s (%d nodes)", srv_boot_ts, xpathObj->nodesetval->nodeNr);
+ } else
+ xmlFree(boot_tm);
+ }
+ xmlXPathFreeObject(xpathObj);
+
+ /* server/current-time -- parse our time-stamp
+ * Type: XML DateTime */
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "server/current-time", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV1-currenttime");
+ return -1;
+ } else if (xpathObj->nodesetval && xpathObj->nodesetval->nodeNr > 0) {
+ if (bind_xml_read_timestamp(doc, xpathObj->nodesetval->nodeTab[0], ¤t_time))
+ current_time = time(NULL);
+ else
+ DEBUG ("bind plugin: Statv1: Server current time: %ld (%d nodes)", current_time, xpathObj->nodesetval->nodeNr);
+ }
+ xmlXPathFreeObject(xpathObj);
+
+ /* requests/opcode -- [name] = [counter]
+ * Variables: QUERY, IQUERY, NOTIFY, UPDATE, ... */
+ if (use_requests) {
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "server/requests/opcode", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV1-currenttime");
+ return -1;
+ } else for (i = 0; xpathObj->nodesetval && i < xpathObj->nodesetval->nodeNr; i++) {
+ xmlNode *name = NULL, *counter = NULL, *child;
+ for (child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode; child != NULL; child = child->next)
+ if (xmlStrcmp (BAD_CAST "name", child->name) == 0)
+ name = child;
+ else if (xmlStrcmp (BAD_CAST "counter", child->name) == 0)
+ counter = child;
+ if (name && counter) {
+ char *tinst = (char *) xmlNodeListGetString (doc, name->xmlChildrenNode, 1);
+ counter_t val;
+ if (!bind_xml_read_counter(doc, counter, &val))
+ submit_counter(current_time, NULL, "dns_opcode", tinst, val);
+ xmlFree(tinst);
+ }
+ }
+ DEBUG ("bind plugin: Statv1: Found %d entries for requests/opcode", xpathObj->nodesetval->nodeNr);
+ xmlXPathFreeObject(xpathObj);
+ }
+
+ /* queries-in/rdtype -- [name] = [counter]
+ * Variables: RESERVED0, A, NS, CNAME, SOA, MR, PTR, HINFO, MX, TXT, RP, X25, PX, AAAA, LOC,
+ * SRV, NAPTR, A6, DS, RRSIG, NSEC, DNSKEY, SPF, TKEY, IXFR, AXFR, ANY, ..., Others */
+ if (use_rrqueries_in) {
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "server/queries-in/rdtype", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV1-currenttime");
+ return -1;
+ } else for (i = 0; xpathObj->nodesetval && i < xpathObj->nodesetval->nodeNr; i++) {
+ xmlNode *name = NULL, *counter = NULL, *child;
+ for (child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode; child != NULL; child = child->next)
+ if (xmlStrcmp (BAD_CAST "name", child->name) == 0)
+ name = child;
+ else if (xmlStrcmp (BAD_CAST "counter", child->name) == 0)
+ counter = child;
+ if (name && counter) {
+ char *tinst = (char *) xmlNodeListGetString (doc, name->xmlChildrenNode, 1);
+ counter_t val;
+ if (!bind_xml_read_counter(doc, counter, &val))
+ submit_counter(current_time, NULL, "dns_qtype", tinst, val);
+ xmlFree(tinst);
+ }
+ }
+ DEBUG ("bind plugin: Statv1: Found %d entries for queries-in/rdtype", xpathObj->nodesetval->nodeNr);
+ xmlXPathFreeObject(xpathObj);
+ }
+
+ /* nsstats -- [$name] = [$value] */
+ /* Variables: Requestv4, Requestv6, ReqEdns0, ReqBadEDNSVer, ReqTSIG, ReqSIG0, ReqBadSIG, ReqTCP,
+ * AuthQryRej, RecQryRej, XfrRej, UpdateRej, Response, TruncatedResp, RespEDNS0, RespTSIG,
+ * RespSIG0, QrySuccess, QryAuthAns, QryNoauthAns, QryReferral, QryNxrrset, QrySERVFAIL,
+ * QryFORMERR, QryNXDOMAIN, QryRecursion, QryDuplicate, QryDropped, QryFailure, XfrReqDone,
+ * UpdateReqFwd, UpdateRespFwd, UpdateFwdFail, UpdateDone, UpdateFail, UpdateBadPrereq */
+ if (use_updates || use_query_results || use_requests) {
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "server/nsstats", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV1-nsstats");
+ return -1;
+ } else if (xpathObj->nodesetval && xpathObj->nodesetval->nodeNr > 0) {
+ xmlNode *child;
+ counter_t val;
+ int n = 0;
+ for (child = xpathObj->nodesetval->nodeTab[0]->xmlChildrenNode; child != NULL; child = child->next, n++)
+ if (child->type == XML_ELEMENT_NODE && !bind_xml_read_counter(doc, child, &val)) {
+ if (use_updates && (strncmp("Update", (char *)child->name, 6) == 0 || strcmp("XfrReqDone", (char *)child->name) == 0))
+ submit_counter(current_time, NULL, "dns_update", (char *)child->name, val);
+ else if (use_query_results && strncmp("Qry", (char *)child->name, 3) == 0)
+ submit_counter(current_time, NULL, "dns_rcode", (char *)child->name, val);
+ else if (use_query_results && (strncmp("Resp", (char *)child->name, 4) == 0 ||
+ strcmp("AuthQryRej", (char *)child->name) == 0 || strcmp("RecQryRej", (char *)child->name) == 0 ||
+ strcmp("XfrRej", (char *)child->name) == 0 || strcmp("TruncatedResp", (char *)child->name) == 0))
+ submit_counter(current_time, NULL, "dns_rcode", (char *)child->name, val);
+ else if (use_requests && strncmp("Req", (char *)child->name, 3) == 0)
+ submit_counter(current_time, NULL, "dns_request", (char *)child->name, val);
+ }
+ DEBUG ("bind plugin: Statv1: Found %d entries for %d nsstats", n, xpathObj->nodesetval->nodeNr);
+ }
+ xmlXPathFreeObject(xpathObj);
+ }
+
+ /* zonestats -- [$name] = [$value] */
+ /* Variables: NotifyOutv4, NotifyOutv6, NotifyInv4, NotifyInv6, NotifyRej, SOAOutv4, SOAOutv6,
+ * AXFRReqv4, AXFRReqv6, IXFRReqv4, IXFRReqv6, XfrSuccess, XfrFail */
+ if (use_zone_maint) {
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "server/zonestats", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV1-zonestats");
+ return -1;
+ } else if (xpathObj->nodesetval && xpathObj->nodesetval->nodeNr > 0) {
+ xmlNode *child;
+ counter_t val;
+ int n = 0;
+ for (child = xpathObj->nodesetval->nodeTab[0]->xmlChildrenNode; child != NULL; child = child->next, n++)
+ if (child->type == XML_ELEMENT_NODE) {
+ if (!bind_xml_read_counter(doc, child, &val))
+ submit_counter(current_time, NULL, "dns_zops", (char *)child->name, val);
+ }
+ DEBUG ("bind plugin: Statv1: Found %d entries for %d zonestats", n, xpathObj->nodesetval->nodeNr);
+ }
+ xmlXPathFreeObject(xpathObj);
+ }
+
+ /* resstats -- [$name] = [$value] */
+ /* Variables: Queryv4, Queryv6, Responsev4, Responsev6, NXDOMAIN, SERVFAIL, FORMERR, OtherError,
+ * EDNS0Fail, Mismatch, Truncated, Lame, Retry, GlueFetchv4, GlueFetchv6, GlueFetchv4Fail,
+ * GlueFetchv6Fail, ValAttempt, ValOk, ValNegOk, ValFail */
+ if (use_resolver) {
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "server/resstats", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV1-resstats");
+ return -1;
+ } else if (xpathObj->nodesetval && xpathObj->nodesetval->nodeNr > 0) {
+ xmlNode *child;
+ counter_t val;
+ int n = 0;
+ for (child = xpathObj->nodesetval->nodeTab[0]->xmlChildrenNode; child != NULL; child = child->next, n++)
+ if (child->type == XML_ELEMENT_NODE) {
+ if (!bind_xml_read_counter(doc, child, &val))
+ submit_counter(current_time, NULL, "dns_resolver", (char *)child->name, val);
+ }
+ DEBUG ("bind plugin: Statv1: Found %d entries for %d resstats", n, xpathObj->nodesetval->nodeNr);
+ }
+ xmlXPathFreeObject(xpathObj);
+ }
+ return 0;
+}
+
+/* Bind 9.6.x */
+static int bind_xml_stats_v2(xmlDoc *doc, xmlXPathContext *xpathCtx, xmlNode *statsnode)
+{
+ xmlXPathObjectPtr xpathObj = NULL;
+ time_t current_time;
+ int i;
+
+ xpathCtx->node = statsnode;
+
+ /* server/boot-time -- detect possible counter-resets
+ * Type: XML DateTime */
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "server/boot-time", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV2-boottime");
+ return -1;
+ } else if (xpathObj->nodesetval && xpathObj->nodesetval->nodeNr > 0) {
+ char *boot_tm = (char *) xmlNodeListGetString (doc, xpathObj->nodesetval->nodeTab[0]->xmlChildrenNode, 1);
+ if (srv_boot_ts == NULL || strcmp(srv_boot_ts, boot_tm) != 0) {
+ xmlFree(srv_boot_ts);
+ srv_boot_ts = boot_tm;
+ /* TODO: tell collectd that our counters got reset ... */
+ DEBUG ("bind plugin: Statv2: Server boot time: %s (%d nodes)", srv_boot_ts, xpathObj->nodesetval->nodeNr);
+ } else
+ xmlFree(boot_tm);
+ }
+ xmlXPathFreeObject(xpathObj);
+
+ /* server/current-time -- parse our time-stamp
+ * Type: XML DateTime */
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "server/current-time", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV2-currenttime");
+ return -1;
+ } else if (xpathObj->nodesetval && xpathObj->nodesetval->nodeNr > 0) {
+ if (bind_xml_read_timestamp(doc, xpathObj->nodesetval->nodeTab[0], ¤t_time))
+ current_time = time(NULL);
+ else
+ DEBUG ("bind plugin: Statv2: Server current time: %ld (%d nodes)", current_time, xpathObj->nodesetval->nodeNr);
+ }
+ xmlXPathFreeObject(xpathObj);
+
+ /* requests/opcode -- [name] = [counter]
+ * Variables: QUERY, ... */
+ if (use_requests) {
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "server/requests/opcode", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV2-opcode");
+ return -1;
+ } else for (i = 0; xpathObj->nodesetval && i < xpathObj->nodesetval->nodeNr; i++) {
+ xmlNode *name = NULL, *counter = NULL, *child;
+ for (child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode; child != NULL; child = child->next)
+ if (xmlStrcmp (BAD_CAST "name", child->name) == 0)
+ name = child;
+ else if (xmlStrcmp (BAD_CAST "counter", child->name) == 0)
+ counter = child;
+ if (name && counter) {
+ char *tinst = (char *) xmlNodeListGetString (doc, name->xmlChildrenNode, 1);
+ counter_t val;
+ if (!bind_xml_read_counter(doc, counter, &val))
+ submit_counter(current_time, NULL, "dns_opcode", tinst, val);
+ xmlFree(tinst);
+ }
+ }
+ DEBUG ("bind plugin: Statv2: Found %d entries for requests/opcode", xpathObj->nodesetval->nodeNr);
+ xmlXPathFreeObject(xpathObj);
+ }
+
+ /* queries-in/rdtype -- [name] = [counter]
+ * Variables: A, NS, SOA, PTR, MX, TXT, SRV, ... */
+ if (use_rrqueries_in) {
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "server/queries-in/rdtype", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV2-rdtype");
+ return -1;
+ } else for (i = 0; xpathObj->nodesetval && i < xpathObj->nodesetval->nodeNr; i++) {
+ xmlNode *name = NULL, *counter = NULL, *child;
+ for (child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode; child != NULL; child = child->next)
+ if (xmlStrcmp (BAD_CAST "name", child->name) == 0)
+ name = child;
+ else if (xmlStrcmp (BAD_CAST "counter", child->name) == 0)
+ counter = child;
+ if (name && counter) {
+ char *tinst = (char *) xmlNodeListGetString (doc, name->xmlChildrenNode, 1);
+ counter_t val;
+ if (!bind_xml_read_counter(doc, counter, &val))
+ submit_counter(current_time, NULL, "dns_qtype", tinst, val);
+ xmlFree(tinst);
+ }
+ }
+ DEBUG ("bind plugin: Statv2: Found %d entries for queries-in/rdtype", xpathObj->nodesetval->nodeNr);
+ xmlXPathFreeObject(xpathObj);
+ }
+
+ /* nsstat -- [name] = [counter]
+ * Variables: Requestv4, Requestv6, ReqEdns0, ReqBadEDNSVer, ReqTSIG, ReqSIG0, ReqBadSIG, ReqTCP,
+ * AuthQryRej, RecQryRej, XfrRej, UpdateRej, Response, TruncatedResp, RespEDNS0, RespTSIG,
+ * RespSIG0, QrySuccess, QryAuthAns, QryNoauthAns, QryReferral, QryNxrrset, QrySERVFAIL,
+ * QryFORMERR, QryNXDOMAIN, QryRecursion, QryDuplicate, QryDropped, QryFailure, XfrReqDone,
+ * UpdateReqFwd, UpdateRespFwd, UpdateFwdFail, UpdateDone, UpdateFail, UpdateBadPrereq, */
+ if (use_updates || use_query_results || use_requests) {
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "server/nsstat", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV2-nsstat");
+ return -1;
+ } else for (i = 0; xpathObj->nodesetval && i < xpathObj->nodesetval->nodeNr; i++) {
+ xmlNode *name = NULL, *counter = NULL, *child;
+ for (child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode; child != NULL; child = child->next)
+ if (xmlStrcmp (BAD_CAST "name", child->name) == 0)
+ name = child;
+ else if (xmlStrcmp (BAD_CAST "counter", child->name) == 0)
+ counter = child;
+ if (name && counter) {
+ char *tinst = (char *) xmlNodeListGetString (doc, name->xmlChildrenNode, 1);
+ counter_t val;
+ if (!bind_xml_read_counter(doc, counter, &val)) {
+ if (use_updates && (strncmp("Update", tinst, 6) == 0 || strcmp("XfrReqDone", tinst) == 0))
+ submit_counter(current_time, NULL, "dns_update", tinst, val);
+ else if (use_query_results && strncmp("Qry", tinst, 3) == 0)
+ submit_counter(current_time, NULL, "dns_rcode", tinst, val);
+ else if (use_query_results && (strncmp("Resp", tinst, 4) == 0 || strcmp("AuthQryRej", tinst) == 0 ||
+ strcmp("RecQryRej", tinst) == 0 || strcmp("XfrRej", tinst) == 0 || strcmp("TruncatedResp", tinst) == 0))
+ submit_counter(current_time, NULL, "dns_rcode", tinst, val);
+ else if (use_requests && strncmp("Req", tinst, 3) == 0)
+ submit_counter(current_time, NULL, "dns_request", tinst, val);
+ }
+ xmlFree(tinst);
+ }
+ }
+ DEBUG ("bind plugin: Statv2: Found %d entries for nsstat", xpathObj->nodesetval->nodeNr);
+ xmlXPathFreeObject(xpathObj);
+ }
+
+ /* zonestat -- [name] = [counter]
+ * Variables: NotifyOutv4, NotifyOutv6, NotifyInv4, NotifyInv6, NotifyRej, SOAOutv4, SOAOutv6,
+ * AXFRReqv4, AXFRReqv6, IXFRReqv4, IXFRReqv6, XfrSuccess, XfrFail */
+ if (use_zone_maint) {
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "server/zonestat", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV2-zonestat");
+ return -1;
+ } else for (i = 0; xpathObj->nodesetval && i < xpathObj->nodesetval->nodeNr; i++) {
+ xmlNode *name = NULL, *counter = NULL, *child;
+ for (child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode; child != NULL; child = child->next)
+ if (xmlStrcmp (BAD_CAST "name", child->name) == 0)
+ name = child;
+ else if (xmlStrcmp (BAD_CAST "counter", child->name) == 0)
+ counter = child;
+ if (name && counter) {
+ char *tinst = (char *) xmlNodeListGetString (doc, name->xmlChildrenNode, 1);
+ counter_t val;
+ if (!bind_xml_read_counter(doc, counter, &val))
+ submit_counter(current_time, NULL, "dns_zops", tinst, val);
+ xmlFree(tinst);
+ }
+ }
+ DEBUG ("bind plugin: Statv2: Found %d entries for zonestat", xpathObj->nodesetval->nodeNr);
+ xmlXPathFreeObject(xpathObj);
+ }
+
+ /* WARNING: per-view only: views/view/resstat, view-name as plugin-instance */
+ /* resstat -- [name] = [counter]
+ * Variables: Queryv4, Queryv6, Responsev4, Responsev6, NXDOMAIN, SERVFAIL, FORMERR, OtherError,
+ * EDNS0Fail, Mismatch, Truncated, Lame, Retry, GlueFetchv4, GlueFetchv6, GlueFetchv4Fail,
+ * GlueFetchv6Fail, ValAttempt, ValOk, ValNegOk, ValFail */
+ if (use_resolver) {
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "views/view", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV2-view");
+ return -1;
+ } else for (i = 0; xpathObj->nodesetval && i < xpathObj->nodesetval->nodeNr; i++) {
+ char *zname = NULL;
+ xmlNode *name = NULL, *counter = NULL, *rchild, *child;
+ int n = 0;
+ for (child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode; child != NULL && zname == NULL; child = child->next)
+ if (xmlStrcmp (BAD_CAST "name", child->name) == 0)
+ zname = (char *) xmlNodeListGetString (doc, child->xmlChildrenNode, 1);
+ if (!zname || strcmp("_bind", zname) == 0)
+ continue; /* Unnamed zone?? */
+ /* else TODO: allow zone filtering */
+ for (rchild = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode; rchild != NULL; rchild = rchild->next, n++)
+ if (xmlStrcmp (BAD_CAST "resstat", rchild->name) == 0) {
+ for (child = rchild->xmlChildrenNode; child != NULL; child = child->next)
+ if (xmlStrcmp (BAD_CAST "name", child->name) == 0)
+ name = child;
+ else if (xmlStrcmp (BAD_CAST "counter", child->name) == 0)
+ counter = child;
+ if (name && counter) {
+ char *tinst = (char *) xmlNodeListGetString (doc, name->xmlChildrenNode, 1);
+ counter_t val;
+ if (!bind_xml_read_counter(doc, counter, &val))
+ submit_counter(current_time, zname, "dns_resolver", tinst, val);
+ xmlFree(tinst);
+ }
+ }
+ DEBUG ("bind plugin: Statv2: Found %d entries for view %s", n, zname);
+ xmlFree(zname);
+ }
+ xmlXPathFreeObject(xpathObj);
+ }
+ return 0;
+}
+
+static int bind_xml (const char *data)
+{
+ xmlDoc *doc = NULL;
+ xmlXPathContextPtr xpathCtx = NULL;
+ xmlXPathObjectPtr xpathObj = NULL;
+ int ret = -1;
+
+ doc = xmlParseMemory (data, strlen (data));
+ if (doc == NULL) {
+ ERROR ("bind plugin: xmlParseMemory failed.");
+ goto out;
+ }
+
+ if ((xpathCtx = xmlXPathNewContext(doc)) == NULL) {
+ ERROR ("bind plugin: xmlXPathNewContext failed.");
+ goto out;
+ }
+ /* Look for /isc/bind/statistics[@version='2.0'] */
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "/isc[@version='1.0']/bind/statistics[@version='1.0']", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV1");
+ goto out;
+ } else if (xpathObj->nodesetval && xpathObj->nodesetval->nodeNr > 0) {
+ /* We have Bind-9.5.x */
+ ret = bind_xml_stats_v1(doc, xpathCtx, xpathObj->nodesetval->nodeTab[0]);
+ goto out;
+ } else {
+ xmlXPathFreeObject(xpathObj);
+ xpathObj = NULL;
+ }
+ if ((xpathObj = xmlXPathEvalExpression(BAD_CAST "/isc[@version='1.0']/bind/statistics[@version='2.0']", xpathCtx)) == NULL) {
+ ERROR("bind plugin: unable to evaluate XPath expression StatsV2");
+ goto out;
+ } else if (xpathObj->nodesetval && xpathObj->nodesetval->nodeNr > 0) {
+ /* We have Bind-9.6.x */
+ ret = bind_xml_stats_v2(doc, xpathCtx, xpathObj->nodesetval->nodeTab[0]);
+ goto out;
+ } else {
+ xmlXPathFreeObject(xpathObj);
+ xpathObj = NULL;
+ }
+ ERROR("bind plugin: unable to find statistics in supported version.");
+
+out:
+ xmlXPathFreeObject(xpathObj);
+ xmlXPathFreeContext(xpathCtx);
+ xmlFreeDoc (doc);
+ return (ret);
+} /* int bind_xml */
+
+static int config_set_str (char **var, const char *value)
+{
+ if (*var != NULL)
+ {
+ free (*var);
+ *var = NULL;
+ }
+
+ if ((*var = strdup (value)) == NULL)
+ return (-1);
+ else
+ return (0);
+} /* int config_set_str */
+
+static int config_set_bool (bool *var, const char *value)
+{
+ if ((strcasecmp ("true", value) == 0)
+ || (strcasecmp ("yes", value) == 0)
+ || (strcasecmp ("on", value) == 0))
+ *var = 1;
+ else if ((strcasecmp ("false", value) == 0)
+ || (strcasecmp ("no", value) == 0)
+ || (strcasecmp ("off", value) == 0))
+ *var = 0;
+ else
+ return -1;
+ return 0;
+} /* int config_set_bool */
+
+static int bind_config (const char *key, const char *value)
+{
+ if (strcasecmp (key, "URL") == 0)
+ return (config_set_str (&url, value));
+ else if (strcasecmp (key, "RRQueriesIn") == 0)
+ return (config_set_bool (&use_rrqueries_in, value));
+ else if (strcasecmp (key, "Requests") == 0)
+ return (config_set_bool (&use_requests, value));
+ else if (strcasecmp (key, "QueryResults") == 0)
+ return (config_set_bool (&use_query_results, value));
+ else if (strcasecmp (key, "Updates") == 0)
+ return (config_set_bool (&use_updates, value));
+ else if (strcasecmp (key, "ZoneMaintenance") == 0)
+ return (config_set_bool (&use_zone_maint, value));
+ else if (strcasecmp (key, "Resolver") == 0)
+ return (config_set_bool (&use_resolver, value));
+ else
+ return (-1);
+} /* int bind_config */
+
+static int bind_init (void)
+{
+ if (url == NULL)
+ {
+ WARNING ("bind plugin: bind_init: No URL configured, "
+ "returning an error.");
+ return (-1);
+ }
+
+ if (curl != NULL)
+ curl_easy_cleanup (curl);
+
+ if ((curl = curl_easy_init ()) == NULL)
+ {
+ ERROR ("bind plugin: bind_init: curl_easy_init failed.");
+ return (-1);
+ }
+
+ curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, bind_curl_callback);
+ curl_easy_setopt (curl, CURLOPT_USERAGENT, PACKAGE_NAME"/"PACKAGE_VERSION);
+ curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, bind_curl_error);
+ curl_easy_setopt (curl, CURLOPT_URL, url);
+ return (0);
+} /* int bind_init */
+
+static int bind_read (void)
+{
+ int status;
+
+ if (curl == NULL)
+ {
+ ERROR ("bind plugin: I don't have a CURL object.");
+ return (-1);
+ }
+
+ if (url == NULL)
+ {
+ ERROR ("bind plugin: No URL has been configured.");
+ return (-1);
+ }
+
+ bind_buffer_fill = 0;
+ if (curl_easy_perform (curl) != 0)
+ {
+ ERROR ("bind plugin: curl_easy_perform failed: %s",
+ bind_curl_error);
+ return (-1);
+ }
+
+ status = bind_xml (bind_buffer);
+ if (status != 0)
+ return (-1);
+ else
+ return (0);
+} /* int bind_read */
+
+void module_register (void)
+{
+ plugin_register_config ("bind", bind_config, config_keys, config_keys_num);
+ plugin_register_init ("bind", bind_init);
+ plugin_register_read ("bind", bind_read);
+} /* void module_register */
+
+/* vim: set sw=2 sts=2 ts=8 et fdm=marker : */
projects / collectd.git / commitdiff