/** * collectd - src/bind.c * Copyright (C) 2009 Bruno PrĂ©mont * Copyright (C) 2009,2010 Florian Forster * * 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 PrĂ©mont * Florian Forster **/ #include "config.h" #if STRPTIME_NEEDS_STANDARDS #ifndef _ISOC99_SOURCE #define _ISOC99_SOURCE 1 #endif #ifndef _POSIX_C_SOURCE #define _POSIX_C_SOURCE 200112L #endif #ifndef _XOPEN_SOURCE #define _XOPEN_SOURCE 500 #endif #endif /* STRPTIME_NEEDS_STANDARDS */ #if TIMEGM_NEEDS_BSD #ifndef _BSD_SOURCE #define _BSD_SOURCE 1 #endif #endif /* TIMEGM_NEEDS_BSD */ #include "collectd.h" #include "plugin.h" #include "utils/common/common.h" #include /* Some versions of libcurl don't include this themselves and then don't have * fd_set available. */ #if HAVE_SYS_SELECT_H #include #endif #include #include #include #ifndef BIND_DEFAULT_URL #define BIND_DEFAULT_URL "http://localhost:8053/" #endif /* * Some types used for the callback functions. `translation_table_ptr_t' and * `list_info_ptr_t' are passed to the callbacks in the `void *user_data' * pointer. */ typedef int (*list_callback_t)(const char *name, value_t value, time_t current_time, void *user_data); struct cb_view_s { char *name; _Bool qtypes; _Bool resolver_stats; _Bool cacherrsets; char **zones; size_t zones_num; }; typedef struct cb_view_s cb_view_t; struct translation_info_s { const char *xml_name; const char *type; const char *type_instance; }; typedef struct translation_info_s translation_info_t; struct translation_table_ptr_s { const translation_info_t *table; size_t table_length; const char *plugin_instance; }; typedef struct translation_table_ptr_s translation_table_ptr_t; struct list_info_ptr_s { const char *plugin_instance; const char *type; }; typedef struct list_info_ptr_s list_info_ptr_t; /* FIXME: Enabled by default for backwards compatibility. */ /* TODO: Remove time parsing code. */ static bool config_parse_time = true; static char *url; static _Bool global_opcodes = 1; static _Bool global_qtypes = 1; static _Bool global_server_stats = 1; static _Bool global_zone_maint_stats = 1; static _Bool global_resolver_stats; static _Bool global_memory_stats = 1; static int timeout = -1; static cb_view_t *views; static size_t views_num; static CURL *curl; static char *bind_buffer; static size_t bind_buffer_size; static size_t bind_buffer_fill; static char bind_curl_error[CURL_ERROR_SIZE]; /* Translation table for the `nsstats' values. */ static const translation_info_t nsstats_translation_table[] = /* {{{ */ { /* Requests */ {"Requestv4", "dns_request", "IPv4"}, {"Requestv6", "dns_request", "IPv6"}, {"ReqEdns0", "dns_request", "EDNS0"}, {"ReqBadEDNSVer", "dns_request", "BadEDNSVer"}, {"ReqTSIG", "dns_request", "TSIG"}, {"ReqSIG0", "dns_request", "SIG0"}, {"ReqBadSIG", "dns_request", "BadSIG"}, {"ReqTCP", "dns_request", "TCP"}, /* Rejects */ {"AuthQryRej", "dns_reject", "authoritative"}, {"RecQryRej", "dns_reject", "recursive"}, {"XfrRej", "dns_reject", "transfer"}, {"UpdateRej", "dns_reject", "update"}, /* Responses */ {"Response", "dns_response", "normal"}, {"TruncatedResp", "dns_response", "truncated"}, {"RespEDNS0", "dns_response", "EDNS0"}, {"RespTSIG", "dns_response", "TSIG"}, {"RespSIG0", "dns_response", "SIG0"}, /* Queries */ {"QryAuthAns", "dns_query", "authoritative"}, {"QryNoauthAns", "dns_query", "nonauth"}, {"QryReferral", "dns_query", "referral"}, {"QryRecursion", "dns_query", "recursion"}, {"QryDuplicate", "dns_query", "duplicate"}, {"QryDropped", "dns_query", "dropped"}, {"QryFailure", "dns_query", "failure"}, /* Response codes */ {"QrySuccess", "dns_rcode", "tx-NOERROR"}, {"QryNxrrset", "dns_rcode", "tx-NXRRSET"}, {"QrySERVFAIL", "dns_rcode", "tx-SERVFAIL"}, {"QryFORMERR", "dns_rcode", "tx-FORMERR"}, {"QryNXDOMAIN", "dns_rcode", "tx-NXDOMAIN"} #if 0 { "XfrReqDone", "type", "type_instance" }, { "UpdateReqFwd", "type", "type_instance" }, { "UpdateRespFwd", "type", "type_instance" }, { "UpdateFwdFail", "type", "type_instance" }, { "UpdateDone", "type", "type_instance" }, { "UpdateFail", "type", "type_instance" }, { "UpdateBadPrereq", "type", "type_instance" }, #endif }; static int nsstats_translation_table_length = STATIC_ARRAY_SIZE(nsstats_translation_table); /* }}} */ /* Translation table for the `zonestats' values. */ static const translation_info_t zonestats_translation_table[] = /* {{{ */ { /* Notify's */ {"NotifyOutv4", "dns_notify", "tx-IPv4"}, {"NotifyOutv6", "dns_notify", "tx-IPv6"}, {"NotifyInv4", "dns_notify", "rx-IPv4"}, {"NotifyInv6", "dns_notify", "rx-IPv6"}, {"NotifyRej", "dns_notify", "rejected"}, /* SOA/AXFS/IXFS requests */ {"SOAOutv4", "dns_opcode", "SOA-IPv4"}, {"SOAOutv6", "dns_opcode", "SOA-IPv6"}, {"AXFRReqv4", "dns_opcode", "AXFR-IPv4"}, {"AXFRReqv6", "dns_opcode", "AXFR-IPv6"}, {"IXFRReqv4", "dns_opcode", "IXFR-IPv4"}, {"IXFRReqv6", "dns_opcode", "IXFR-IPv6"}, /* Domain transfers */ {"XfrSuccess", "dns_transfer", "success"}, {"XfrFail", "dns_transfer", "failure"}}; static int zonestats_translation_table_length = STATIC_ARRAY_SIZE(zonestats_translation_table); /* }}} */ /* Translation table for the `resstats' values. */ static const translation_info_t resstats_translation_table[] = /* {{{ */ { /* Generic resolver information */ {"Queryv4", "dns_query", "IPv4"}, {"Queryv6", "dns_query", "IPv6"}, {"Responsev4", "dns_response", "IPv4"}, {"Responsev6", "dns_response", "IPv6"}, /* Received response codes */ {"NXDOMAIN", "dns_rcode", "rx-NXDOMAIN"}, {"SERVFAIL", "dns_rcode", "rx-SERVFAIL"}, {"FORMERR", "dns_rcode", "rx-FORMERR"}, {"OtherError", "dns_rcode", "rx-OTHER"}, {"EDNS0Fail", "dns_rcode", "rx-EDNS0Fail"}, /* Received responses */ {"Mismatch", "dns_response", "mismatch"}, {"Truncated", "dns_response", "truncated"}, {"Lame", "dns_response", "lame"}, {"Retry", "dns_query", "retry"}, #if 0 { "GlueFetchv4", "type", "type_instance" }, { "GlueFetchv6", "type", "type_instance" }, { "GlueFetchv4Fail", "type", "type_instance" }, { "GlueFetchv6Fail", "type", "type_instance" }, #endif /* DNSSEC information */ {"ValAttempt", "dns_resolver", "DNSSEC-attempt"}, {"ValOk", "dns_resolver", "DNSSEC-okay"}, {"ValNegOk", "dns_resolver", "DNSSEC-negokay"}, {"ValFail", "dns_resolver", "DNSSEC-fail"}}; static int resstats_translation_table_length = STATIC_ARRAY_SIZE(resstats_translation_table); /* }}} */ /* Translation table for the `memory/summary' values. */ static const translation_info_t memsummary_translation_table[] = /* {{{ */ {{"TotalUse", "memory", "TotalUse"}, {"InUse", "memory", "InUse"}, {"BlockSize", "memory", "BlockSize"}, {"ContextSize", "memory", "ContextSize"}, {"Lost", "memory", "Lost"}}; static int memsummary_translation_table_length = STATIC_ARRAY_SIZE(memsummary_translation_table); /* }}} */ static void submit(time_t ts, const char *plugin_instance, /* {{{ */ const char *type, const char *type_instance, value_t value) { value_list_t vl = VALUE_LIST_INIT; vl.values = &value; vl.values_len = 1; if (config_parse_time) vl.time = TIME_T_TO_CDTIME_T(ts); sstrncpy(vl.plugin, "bind", sizeof(vl.plugin)); if (plugin_instance) { sstrncpy(vl.plugin_instance, plugin_instance, sizeof(vl.plugin_instance)); replace_special(vl.plugin_instance, sizeof(vl.plugin_instance)); } sstrncpy(vl.type, type, sizeof(vl.type)); if (type_instance) { sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance)); replace_special(vl.type_instance, sizeof(vl.type_instance)); } plugin_dispatch_values(&vl); } /* }}} void submit */ static size_t bind_curl_callback(void *buf, size_t size, /* {{{ */ size_t nmemb, void __attribute__((unused)) * stream) { size_t len = size * nmemb; if (len == 0) return len; if ((bind_buffer_fill + len) >= bind_buffer_size) { char *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 */ /* * Callback, that's called with a translation table. * (Plugin instance is fixed, type and type instance come from lookup table.) */ static int bind_xml_table_callback(const char *name, value_t value, /* {{{ */ time_t current_time, void *user_data) { translation_table_ptr_t *table = (translation_table_ptr_t *)user_data; if (table == NULL) return -1; for (size_t i = 0; i < table->table_length; i++) { if (strcmp(table->table[i].xml_name, name) != 0) continue; submit(current_time, table->plugin_instance, table->table[i].type, table->table[i].type_instance, value); break; } return 0; } /* }}} int bind_xml_table_callback */ /* * Callback, that's used for lists. * (Plugin instance and type are fixed, xml name is used as type instance.) */ static int bind_xml_list_callback(const char *name, /* {{{ */ value_t value, time_t current_time, void *user_data) { list_info_ptr_t *list_info = (list_info_ptr_t *)user_data; if (list_info == NULL) return -1; submit(current_time, list_info->plugin_instance, list_info->type, /* type instance = */ name, value); return 0; } /* }}} int bind_xml_list_callback */ static int bind_xml_read_derive(xmlDoc *doc, xmlNode *node, /* {{{ */ derive_t *ret_value) { char *str_ptr = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1); if (str_ptr == NULL) { ERROR("bind plugin: bind_xml_read_derive: xmlNodeListGetString failed."); return -1; } value_t value; int status = parse_value(str_ptr, &value, DS_TYPE_DERIVE); if (status != 0) { xmlFree(str_ptr); return -1; } xmlFree(str_ptr); *ret_value = value.derive; return 0; } /* }}} int bind_xml_read_derive */ static int bind_xml_read_gauge(xmlDoc *doc, xmlNode *node, /* {{{ */ gauge_t *ret_value) { char *str_ptr = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1); if (str_ptr == NULL) { ERROR("bind plugin: bind_xml_read_gauge: xmlNodeListGetString failed."); return -1; } char *end_ptr; errno = 0; double value = strtod(str_ptr, &end_ptr); xmlFree(str_ptr); if (str_ptr == end_ptr || errno) { if (errno && (value < 0)) ERROR("bind plugin: bind_xml_read_gauge: strtod failed with underflow."); else if (errno && (value > 0)) ERROR("bind plugin: bind_xml_read_gauge: strtod failed with overflow."); else ERROR("bind plugin: bind_xml_read_gauge: strtod failed."); return -1; } *ret_value = (gauge_t)value; return 0; } /* }}} int bind_xml_read_gauge */ static int bind_xml_read_timestamp(const char *xpath_expression, /* {{{ */ xmlDoc *doc, xmlXPathContext *xpathCtx, time_t *ret_value) { xmlXPathObject *xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx); if (xpathObj == NULL) { ERROR("bind plugin: Unable to evaluate XPath expression `%s'.", xpath_expression); return -1; } if ((xpathObj->nodesetval == NULL) || (xpathObj->nodesetval->nodeNr < 1)) { xmlXPathFreeObject(xpathObj); return -1; } if (xpathObj->nodesetval->nodeNr != 1) { NOTICE("bind plugin: Evaluating the XPath expression `%s' returned " "%i nodes. Only handling the first one.", xpath_expression, xpathObj->nodesetval->nodeNr); } xmlNode *node = xpathObj->nodesetval->nodeTab[0]; if (node->xmlChildrenNode == NULL) { ERROR("bind plugin: bind_xml_read_timestamp: " "node->xmlChildrenNode == NULL"); xmlXPathFreeObject(xpathObj); return -1; } char *str_ptr = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1); if (str_ptr == NULL) { ERROR("bind plugin: bind_xml_read_timestamp: xmlNodeListGetString failed."); xmlXPathFreeObject(xpathObj); return -1; } struct tm tm = {0}; char *tmp = strptime(str_ptr, "%Y-%m-%dT%T", &tm); xmlFree(str_ptr); if (tmp == NULL) { ERROR("bind plugin: bind_xml_read_timestamp: strptime failed."); xmlXPathFreeObject(xpathObj); return -1; } #if HAVE_TIMEGM time_t t = timegm(&tm); if (t == ((time_t)-1)) { ERROR("bind plugin: timegm() failed: %s", STRERRNO); return -1; } *ret_value = t; #else time_t t = mktime(&tm); if (t == ((time_t)-1)) { ERROR("bind plugin: mktime() failed: %s", STRERRNO); return -1; } /* mktime assumes that tm is local time. Luckily, it also sets timezone to * the offset used for the conversion, and we undo the conversion to convert * back to UTC. */ *ret_value = t - timezone; #endif xmlXPathFreeObject(xpathObj); return 0; } /* }}} int bind_xml_read_timestamp */ /* * bind_parse_generic_name_value * * Reads statistics in the form: * * QUERY * 123 * */ static int bind_parse_generic_name_value(const char *xpath_expression, /* {{{ */ list_callback_t list_callback, void *user_data, xmlDoc *doc, xmlXPathContext *xpathCtx, time_t current_time, int ds_type) { xmlXPathObject *xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx); if (xpathObj == NULL) { ERROR("bind plugin: Unable to evaluate XPath expression `%s'.", xpath_expression); return -1; } int num_entries = 0; /* Iterate over all matching nodes. */ for (int i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++) { xmlNode *name_node = NULL; xmlNode *counter = NULL; xmlNode *parent = xpathObj->nodesetval->nodeTab[i]; DEBUG("bind plugin: bind_parse_generic_name_value: parent->name = %s;", (char *)parent->name); /* Iterate over all child nodes. */ for (xmlNode *child = parent->xmlChildrenNode; child != NULL; child = child->next) { if (child->type != XML_ELEMENT_NODE) continue; if (xmlStrcmp(BAD_CAST "name", child->name) == 0) name_node = child; else if (xmlStrcmp(BAD_CAST "counter", child->name) == 0) counter = child; } if ((name_node != NULL) && (counter != NULL)) { char *name = (char *)xmlNodeListGetString(doc, name_node->xmlChildrenNode, 1); value_t value; int status; if (ds_type == DS_TYPE_GAUGE) status = bind_xml_read_gauge(doc, counter, &value.gauge); else status = bind_xml_read_derive(doc, counter, &value.derive); if (status != 0) { xmlFree(name); continue; } status = (*list_callback)(name, value, current_time, user_data); if (status == 0) num_entries++; xmlFree(name); } } DEBUG("bind plugin: Found %d %s for XPath expression `%s'", num_entries, (num_entries == 1) ? "entry" : "entries", xpath_expression); xmlXPathFreeObject(xpathObj); return 0; } /* }}} int bind_parse_generic_name_value */ /* * bind_parse_generic_value_list * * Reads statistics in the form: * * 123 * 234 * 345 * : * */ static int bind_parse_generic_value_list(const char *xpath_expression, /* {{{ */ list_callback_t list_callback, void *user_data, xmlDoc *doc, xmlXPathContext *xpathCtx, time_t current_time, int ds_type) { xmlXPathObject *xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx); if (xpathObj == NULL) { ERROR("bind plugin: Unable to evaluate XPath expression `%s'.", xpath_expression); return -1; } int num_entries = 0; /* Iterate over all matching nodes. */ for (int i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++) { /* Iterate over all child nodes. */ for (xmlNode *child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode; child != NULL; child = child->next) { if (child->type != XML_ELEMENT_NODE) continue; char *node_name = (char *)child->name; value_t value; int status; if (ds_type == DS_TYPE_GAUGE) status = bind_xml_read_gauge(doc, child, &value.gauge); else status = bind_xml_read_derive(doc, child, &value.derive); if (status != 0) continue; status = (*list_callback)(node_name, value, current_time, user_data); if (status == 0) num_entries++; } } DEBUG("bind plugin: Found %d %s for XPath expression `%s'", num_entries, (num_entries == 1) ? "entry" : "entries", xpath_expression); xmlXPathFreeObject(xpathObj); return 0; } /* }}} int bind_parse_generic_value_list */ /* * bind_parse_generic_name_attr_value_list * * Reads statistics in the form: * * 123 * 234 * 345 * : * */ static int bind_parse_generic_name_attr_value_list( const char *xpath_expression, /* {{{ */ list_callback_t list_callback, void *user_data, xmlDoc *doc, xmlXPathContext *xpathCtx, time_t current_time, int ds_type) { xmlXPathObject *xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx); if (xpathObj == NULL) { ERROR("bind plugin: Unable to evaluate XPath expression `%s'.", xpath_expression); return -1; } int num_entries = 0; /* Iterate over all matching nodes. */ for (int i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr); i++) { /* Iterate over all child nodes. */ for (xmlNode *child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode; child != NULL; child = child->next) { if (child->type != XML_ELEMENT_NODE) continue; if (strncmp("counter", (char *)child->name, strlen("counter")) != 0) continue; char *attr_name = (char *)xmlGetProp(child, BAD_CAST "name"); if (attr_name == NULL) { DEBUG("bind plugin: found without name."); continue; } value_t value; int status; if (ds_type == DS_TYPE_GAUGE) status = bind_xml_read_gauge(doc, child, &value.gauge); else status = bind_xml_read_derive(doc, child, &value.derive); if (status != 0) { xmlFree(attr_name); continue; } status = (*list_callback)(attr_name, value, current_time, user_data); if (status == 0) num_entries++; xmlFree(attr_name); } } DEBUG("bind plugin: Found %d %s for XPath expression `%s'", num_entries, (num_entries == 1) ? "entry" : "entries", xpath_expression); xmlXPathFreeObject(xpathObj); return 0; } /* }}} int bind_parse_generic_name_attr_value_list */ static int bind_xml_stats_handle_zone(int version, xmlDoc *doc, /* {{{ */ xmlXPathContext *path_ctx, xmlNode *node, cb_view_t *view, time_t current_time) { char *zone_name = NULL; if (version >= 3) { char *n = (char *)xmlGetProp(node, BAD_CAST "name"); char *c = (char *)xmlGetProp(node, BAD_CAST "rdataclass"); if (n && c) { zone_name = (char *)xmlMalloc(strlen(n) + strlen(c) + 2); snprintf(zone_name, strlen(n) + strlen(c) + 2, "%s/%s", n, c); } xmlFree(n); xmlFree(c); } else { xmlXPathObject *path_obj = xmlXPathEvalExpression(BAD_CAST "name", path_ctx); if (path_obj == NULL) { ERROR("bind plugin: xmlXPathEvalExpression failed."); return -1; } for (int i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr); i++) { zone_name = (char *)xmlNodeListGetString( doc, path_obj->nodesetval->nodeTab[i]->xmlChildrenNode, 1); if (zone_name != NULL) break; } xmlXPathFreeObject(path_obj); } if (zone_name == NULL) { ERROR("bind plugin: Could not determine zone name."); return -1; } size_t j; for (j = 0; j < view->zones_num; j++) { if (strcasecmp(zone_name, view->zones[j]) == 0) break; } xmlFree(zone_name); if (j >= view->zones_num) return 0; zone_name = view->zones[j]; DEBUG("bind plugin: bind_xml_stats_handle_zone: Found zone `%s'.", zone_name); { /* Parse the tag {{{ */ char plugin_instance[DATA_MAX_NAME_LEN]; translation_table_ptr_t table_ptr = {nsstats_translation_table, nsstats_translation_table_length, plugin_instance}; snprintf(plugin_instance, sizeof(plugin_instance), "%s-zone-%s", view->name, zone_name); if (version == 3) { list_info_ptr_t list_info = {plugin_instance, /* type = */ "dns_qtype"}; bind_parse_generic_name_attr_value_list( /* xpath = */ "counters[@type='rcode']", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, path_ctx, current_time, DS_TYPE_COUNTER); bind_parse_generic_name_attr_value_list( /* xpath = */ "counters[@type='qtype']", /* callback = */ bind_xml_list_callback, /* user_data = */ &list_info, doc, path_ctx, current_time, DS_TYPE_COUNTER); } else { bind_parse_generic_value_list(/* xpath = */ "counters", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, path_ctx, current_time, DS_TYPE_COUNTER); } } /* }}} */ return 0; } /* }}} int bind_xml_stats_handle_zone */ static int bind_xml_stats_search_zones(int version, xmlDoc *doc, /* {{{ */ xmlXPathContext *path_ctx, xmlNode *node, cb_view_t *view, time_t current_time) { xmlXPathContext *zone_path_context = xmlXPathNewContext(doc); if (zone_path_context == NULL) { ERROR("bind plugin: xmlXPathNewContext failed."); return -1; } xmlXPathObject *zone_nodes = xmlXPathEvalExpression(BAD_CAST "zones/zone", path_ctx); if (zone_nodes == NULL) { ERROR("bind plugin: Cannot find any tags."); xmlXPathFreeContext(zone_path_context); return -1; } for (int i = 0; i < zone_nodes->nodesetval->nodeNr; i++) { node = zone_nodes->nodesetval->nodeTab[i]; assert(node != NULL); zone_path_context->node = node; bind_xml_stats_handle_zone(version, doc, zone_path_context, node, view, current_time); } xmlXPathFreeObject(zone_nodes); xmlXPathFreeContext(zone_path_context); return 0; } /* }}} int bind_xml_stats_search_zones */ static int bind_xml_stats_handle_view(int version, xmlDoc *doc, /* {{{ */ xmlXPathContext *path_ctx, xmlNode *node, time_t current_time) { char *view_name = NULL; cb_view_t *view; size_t j; if (version == 3) { view_name = (char *)xmlGetProp(node, BAD_CAST "name"); if (view_name == NULL) { ERROR("bind plugin: Could not determine view name."); return -1; } for (j = 0; j < views_num; j++) { if (strcasecmp(view_name, views[j].name) == 0) break; } xmlFree(view_name); view_name = NULL; } else { xmlXPathObject *path_obj = xmlXPathEvalExpression(BAD_CAST "name", path_ctx); if (path_obj == NULL) { ERROR("bind plugin: xmlXPathEvalExpression failed."); return -1; } for (int i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr); i++) { view_name = (char *)xmlNodeListGetString( doc, path_obj->nodesetval->nodeTab[i]->xmlChildrenNode, 1); if (view_name != NULL) break; } if (view_name == NULL) { ERROR("bind plugin: Could not determine view name."); xmlXPathFreeObject(path_obj); return -1; } for (j = 0; j < views_num; j++) { if (strcasecmp(view_name, views[j].name) == 0) break; } xmlFree(view_name); xmlXPathFreeObject(path_obj); view_name = NULL; path_obj = NULL; } if (j >= views_num) return 0; view = views + j; DEBUG("bind plugin: bind_xml_stats_handle_view: Found view `%s'.", view->name); if (view->qtypes != 0) /* {{{ */ { char plugin_instance[DATA_MAX_NAME_LEN]; list_info_ptr_t list_info = {plugin_instance, /* type = */ "dns_qtype"}; snprintf(plugin_instance, sizeof(plugin_instance), "%s-qtypes", view->name); if (version == 3) { bind_parse_generic_name_attr_value_list( /* xpath = */ "counters[@type='resqtype']", /* callback = */ bind_xml_list_callback, /* user_data = */ &list_info, doc, path_ctx, current_time, DS_TYPE_COUNTER); } else { bind_parse_generic_name_value(/* xpath = */ "rdtype", /* callback = */ bind_xml_list_callback, /* user_data = */ &list_info, doc, path_ctx, current_time, DS_TYPE_COUNTER); } } /* }}} */ if (view->resolver_stats != 0) /* {{{ */ { char plugin_instance[DATA_MAX_NAME_LEN]; translation_table_ptr_t table_ptr = {resstats_translation_table, resstats_translation_table_length, plugin_instance}; snprintf(plugin_instance, sizeof(plugin_instance), "%s-resolver_stats", view->name); if (version == 3) { bind_parse_generic_name_attr_value_list( "counters[@type='resstats']", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, path_ctx, current_time, DS_TYPE_COUNTER); } else { bind_parse_generic_name_value("resstat", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, path_ctx, current_time, DS_TYPE_COUNTER); } } /* }}} */ /* Record types in the cache */ if (view->cacherrsets != 0) /* {{{ */ { char plugin_instance[DATA_MAX_NAME_LEN]; list_info_ptr_t list_info = {plugin_instance, /* type = */ "dns_qtype_cached"}; snprintf(plugin_instance, sizeof(plugin_instance), "%s-cache_rr_sets", view->name); bind_parse_generic_name_value(/* xpath = */ "cache/rrset", /* callback = */ bind_xml_list_callback, /* user_data = */ &list_info, doc, path_ctx, current_time, DS_TYPE_GAUGE); } /* }}} */ if (view->zones_num > 0) bind_xml_stats_search_zones(version, doc, path_ctx, node, view, current_time); return 0; } /* }}} int bind_xml_stats_handle_view */ static int bind_xml_stats_search_views(int version, xmlDoc *doc, /* {{{ */ xmlXPathContext *xpathCtx, time_t current_time) { xmlXPathContext *view_path_context = xmlXPathNewContext(doc); if (view_path_context == NULL) { ERROR("bind plugin: xmlXPathNewContext failed."); return -1; } xmlXPathObject *view_nodes = xmlXPathEvalExpression(BAD_CAST "views/view", xpathCtx); if (view_nodes == NULL) { ERROR("bind plugin: Cannot find any tags."); xmlXPathFreeContext(view_path_context); return -1; } for (int i = 0; i < view_nodes->nodesetval->nodeNr; i++) { xmlNode *node = view_nodes->nodesetval->nodeTab[i]; assert(node != NULL); view_path_context->node = node; bind_xml_stats_handle_view(version, doc, view_path_context, node, current_time); } xmlXPathFreeObject(view_nodes); xmlXPathFreeContext(view_path_context); return 0; } /* }}} int bind_xml_stats_search_views */ static void bind_xml_stats_v3(xmlDoc *doc, /* {{{ */ xmlXPathContext *xpathCtx, time_t current_time) { /* XPath: server/counters[@type='opcode'] * Variables: QUERY, IQUERY, NOTIFY, UPDATE, ... * Layout v3: * * 1 * : * */ if (global_opcodes != 0) { list_info_ptr_t list_info = {/* plugin instance = */ "global-opcodes", /* type = */ "dns_opcode"}; bind_parse_generic_name_attr_value_list( /* xpath = */ "server/counters[@type='opcode']", /* callback = */ bind_xml_list_callback, /* user_data = */ &list_info, doc, xpathCtx, current_time, DS_TYPE_COUNTER); } /* XPath: server/counters[@type='qtype'] * 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 * Layout v3: * * 1 * : * */ if (global_qtypes != 0) { list_info_ptr_t list_info = {/* plugin instance = */ "global-qtypes", /* type = */ "dns_qtype"}; bind_parse_generic_name_attr_value_list( /* xpath = */ "server/counters[@type='qtype']", /* callback = */ bind_xml_list_callback, /* user_data = */ &list_info, doc, xpathCtx, current_time, DS_TYPE_COUNTER); } /* XPath: server/counters[@type='nsstat'] * 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 * Layout v3: * 1 * 0 * : * */ if (global_server_stats) { translation_table_ptr_t table_ptr = { nsstats_translation_table, nsstats_translation_table_length, /* plugin_instance = */ "global-server_stats"}; bind_parse_generic_name_attr_value_list( "server/counters[@type='nsstat']", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, xpathCtx, current_time, DS_TYPE_COUNTER); } /* XPath: server/zonestats, server/zonestat, * server/counters[@type='zonestat'] * Variables: NotifyOutv4, NotifyOutv6, NotifyInv4, NotifyInv6, NotifyRej, * SOAOutv4, SOAOutv6, AXFRReqv4, AXFRReqv6, IXFRReqv4, IXFRReqv6, * XfrSuccess, XfrFail * Layout v3: * 0 * 0 * : * */ if (global_zone_maint_stats) { translation_table_ptr_t table_ptr = { zonestats_translation_table, zonestats_translation_table_length, /* plugin_instance = */ "global-zone_maint_stats"}; bind_parse_generic_name_attr_value_list( "server/counters[@type='zonestat']", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, xpathCtx, current_time, DS_TYPE_COUNTER); } /* XPath: server/resstats, server/counters[@type='resstat'] * Variables: Queryv4, Queryv6, Responsev4, Responsev6, NXDOMAIN, SERVFAIL, * FORMERR, OtherError, EDNS0Fail, Mismatch, Truncated, Lame, * Retry, GlueFetchv4, GlueFetchv6, GlueFetchv4Fail, * GlueFetchv6Fail, ValAttempt, ValOk, ValNegOk, ValFail * Layout v3: * 0 * 0 * : * */ if (global_resolver_stats != 0) { translation_table_ptr_t table_ptr = { resstats_translation_table, resstats_translation_table_length, /* plugin_instance = */ "global-resolver_stats"}; bind_parse_generic_name_attr_value_list( "server/counters[@type='resstat']", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, xpathCtx, current_time, DS_TYPE_COUNTER); } } /* }}} bind_xml_stats_v3 */ static void bind_xml_stats_v1_v2(int version, xmlDoc *doc, /* {{{ */ xmlXPathContext *xpathCtx, time_t current_time) { /* XPath: server/requests/opcode, server/counters[@type='opcode'] * Variables: QUERY, IQUERY, NOTIFY, UPDATE, ... * Layout V1 and V2: * * A * 1 * * : */ if (global_opcodes != 0) { list_info_ptr_t list_info = {/* plugin instance = */ "global-opcodes", /* type = */ "dns_opcode"}; bind_parse_generic_name_value(/* xpath = */ "server/requests/opcode", /* callback = */ bind_xml_list_callback, /* user_data = */ &list_info, doc, xpathCtx, current_time, DS_TYPE_COUNTER); } /* XPath: server/queries-in/rdtype, server/counters[@type='qtype'] * 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 * Layout v1 or v2: * * A * 1 * * : */ if (global_qtypes != 0) { list_info_ptr_t list_info = {/* plugin instance = */ "global-qtypes", /* type = */ "dns_qtype"}; bind_parse_generic_name_value(/* xpath = */ "server/queries-in/rdtype", /* callback = */ bind_xml_list_callback, /* user_data = */ &list_info, doc, xpathCtx, current_time, DS_TYPE_COUNTER); } /* XPath: server/nsstats, server/nsstat, server/counters[@type='nsstat'] * 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 * Layout v1: * * 1 * 0 * : * * Layout v2: * * Requestv4 * 1 * * * Requestv6 * 0 * * : */ if (global_server_stats) { translation_table_ptr_t table_ptr = { nsstats_translation_table, nsstats_translation_table_length, /* plugin_instance = */ "global-server_stats"}; if (version == 1) { bind_parse_generic_value_list("server/nsstats", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, xpathCtx, current_time, DS_TYPE_COUNTER); } else { bind_parse_generic_name_value("server/nsstat", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, xpathCtx, current_time, DS_TYPE_COUNTER); } } /* XPath: server/zonestats, server/zonestat, * server/counters[@type='zonestat'] * Variables: NotifyOutv4, NotifyOutv6, NotifyInv4, NotifyInv6, NotifyRej, * SOAOutv4, SOAOutv6, AXFRReqv4, AXFRReqv6, IXFRReqv4, IXFRReqv6, * XfrSuccess, XfrFail * Layout v1: * * 0 * 0 * : * * Layout v2: * * NotifyOutv4 * 0 * * * NotifyOutv6 * 0 * * : */ if (global_zone_maint_stats) { translation_table_ptr_t table_ptr = { zonestats_translation_table, zonestats_translation_table_length, /* plugin_instance = */ "global-zone_maint_stats"}; if (version == 1) { bind_parse_generic_value_list("server/zonestats", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, xpathCtx, current_time, DS_TYPE_COUNTER); } else { bind_parse_generic_name_value("server/zonestat", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, xpathCtx, current_time, DS_TYPE_COUNTER); } } /* XPath: server/resstats, server/counters[@type='resstat'] * Variables: Queryv4, Queryv6, Responsev4, Responsev6, NXDOMAIN, SERVFAIL, * FORMERR, OtherError, EDNS0Fail, Mismatch, Truncated, Lame, * Retry, GlueFetchv4, GlueFetchv6, GlueFetchv4Fail, * GlueFetchv6Fail, ValAttempt, ValOk, ValNegOk, ValFail * Layout v1: * * 0 * 0 * : * * Layout v2: * * Queryv4 * 0 * * * Queryv6 * 0 * * : */ if (global_resolver_stats != 0) { translation_table_ptr_t table_ptr = { resstats_translation_table, resstats_translation_table_length, /* plugin_instance = */ "global-resolver_stats"}; if (version == 1) { bind_parse_generic_value_list("server/resstats", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, xpathCtx, current_time, DS_TYPE_COUNTER); } else { bind_parse_generic_name_value("server/resstat", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, xpathCtx, current_time, DS_TYPE_COUNTER); } } } /* }}} bind_xml_stats_v1_v2 */ static int bind_xml_stats(int version, xmlDoc *doc, /* {{{ */ xmlXPathContext *xpathCtx, xmlNode *statsnode) { time_t current_time = 0; xpathCtx->node = statsnode; /* TODO: Check `server/boot-time' to recognize server restarts. */ int status = bind_xml_read_timestamp("server/current-time", doc, xpathCtx, ¤t_time); if (status != 0) { ERROR("bind plugin: Reading `server/current-time' failed."); return -1; } DEBUG("bind plugin: Current server time is %i.", (int)current_time); if (version == 3) { bind_xml_stats_v3(doc, xpathCtx, current_time); } else { bind_xml_stats_v1_v2(version, doc, xpathCtx, current_time); } /* XPath: memory/summary * Variables: TotalUse, InUse, BlockSize, ContextSize, Lost * Layout: v2 and v3: * * 6587096 * 1345424 * 5505024 * 3732456 * 0 * */ if (global_memory_stats != 0) { translation_table_ptr_t table_ptr = { memsummary_translation_table, memsummary_translation_table_length, /* plugin_instance = */ "global-memory_stats"}; bind_parse_generic_value_list("memory/summary", /* callback = */ bind_xml_table_callback, /* user_data = */ &table_ptr, doc, xpathCtx, current_time, DS_TYPE_GAUGE); } if (views_num > 0) bind_xml_stats_search_views(version, doc, xpathCtx, current_time); return 0; } /* }}} int bind_xml_stats */ static int bind_xml(const char *data) /* {{{ */ { int ret = -1; xmlDoc *doc = xmlParseMemory(data, strlen(data)); if (doc == NULL) { ERROR("bind plugin: xmlParseMemory failed."); return -1; } xmlXPathContext *xpathCtx = xmlXPathNewContext(doc); if (xpathCtx == NULL) { ERROR("bind plugin: xmlXPathNewContext failed."); xmlFreeDoc(doc); return -1; } // // version 3.* of statistics XML (since BIND9.9) // xmlXPathObject *xpathObj = xmlXPathEvalExpression(BAD_CAST "/statistics", xpathCtx); if (xpathObj == NULL || xpathObj->nodesetval == NULL || xpathObj->nodesetval->nodeNr == 0) { DEBUG("bind plugin: Statistics appears not to be v3"); // we will fallback to v1 or v2 detection if (xpathObj != NULL) { xmlXPathFreeObject(xpathObj); } } else { for (int i = 0; i < xpathObj->nodesetval->nodeNr; i++) { xmlNode *node; char *attr_version; node = xpathObj->nodesetval->nodeTab[i]; assert(node != NULL); attr_version = (char *)xmlGetProp(node, BAD_CAST "version"); if (attr_version == NULL) { NOTICE("bind plugin: Found tag doesn't have a " "`version' attribute."); continue; } DEBUG("bind plugin: Found: ", attr_version); if (strncmp("3.", attr_version, strlen("3.")) != 0) { /* TODO: Use the complaint mechanism here. */ NOTICE("bind plugin: Found tag with version `%s'. " "Unfortunately I have no clue how to parse that. " "Please open a bug report for this.", attr_version); xmlFree(attr_version); continue; } ret = bind_xml_stats(3, doc, xpathCtx, node); xmlFree(attr_version); /* One node ought to be enough. */ break; } // we are finished, early-return xmlXPathFreeObject(xpathObj); xmlXPathFreeContext(xpathCtx); xmlFreeDoc(doc); return ret; } // // versions 1.* or 2.* of statistics XML // xpathObj = xmlXPathEvalExpression(BAD_CAST "/isc/bind/statistics", xpathCtx); if (xpathObj == NULL) { ERROR("bind plugin: Cannot find the tag."); xmlXPathFreeContext(xpathCtx); xmlFreeDoc(doc); return -1; } else if (xpathObj->nodesetval == NULL) { ERROR("bind plugin: xmlXPathEvalExpression failed."); xmlXPathFreeObject(xpathObj); xmlXPathFreeContext(xpathCtx); xmlFreeDoc(doc); return -1; } for (int i = 0; i < xpathObj->nodesetval->nodeNr; i++) { xmlNode *node; char *attr_version; int parsed_version = 0; node = xpathObj->nodesetval->nodeTab[i]; assert(node != NULL); attr_version = (char *)xmlGetProp(node, BAD_CAST "version"); if (attr_version == NULL) { NOTICE("bind plugin: Found tag doesn't have a " "`version' attribute."); continue; } DEBUG("bind plugin: Found: ", attr_version); /* At the time this plugin was written, version "1.0" was used by * BIND 9.5.0, version "2.0" was used by BIND 9.5.1 and 9.6.0. We assume * that "1.*" and "2.*" don't introduce structural changes, so we just * check for the first two characters here. */ if (strncmp("1.", attr_version, strlen("1.")) == 0) parsed_version = 1; else if (strncmp("2.", attr_version, strlen("2.")) == 0) parsed_version = 2; else { /* TODO: Use the complaint mechanism here. */ NOTICE("bind plugin: Found tag with version `%s'. " "Unfortunately I have no clue how to parse that. " "Please open a bug report for this.", attr_version); xmlFree(attr_version); continue; } ret = bind_xml_stats(parsed_version, doc, xpathCtx, node); xmlFree(attr_version); /* One node ought to be enough. */ break; } xmlXPathFreeObject(xpathObj); xmlXPathFreeContext(xpathCtx); xmlFreeDoc(doc); return ret; } /* }}} int bind_xml */ static int bind_config_add_view_zone(cb_view_t *view, /* {{{ */ oconfig_item_t *ci) { if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING)) { WARNING("bind plugin: The `Zone' option needs " "exactly one string argument."); return -1; } char **tmp = realloc(view->zones, sizeof(char *) * (view->zones_num + 1)); if (tmp == NULL) { ERROR("bind plugin: realloc failed."); return -1; } view->zones = tmp; view->zones[view->zones_num] = strdup(ci->values[0].value.string); if (view->zones[view->zones_num] == NULL) { ERROR("bind plugin: strdup failed."); return -1; } view->zones_num++; return 0; } /* }}} int bind_config_add_view_zone */ static int bind_config_add_view(oconfig_item_t *ci) /* {{{ */ { if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING)) { WARNING("bind plugin: `View' blocks need exactly one string argument."); return -1; } cb_view_t *tmp = realloc(views, sizeof(*views) * (views_num + 1)); if (tmp == NULL) { ERROR("bind plugin: realloc failed."); return -1; } views = tmp; tmp = views + views_num; memset(tmp, 0, sizeof(*tmp)); tmp->qtypes = 1; tmp->resolver_stats = 1; tmp->cacherrsets = 1; tmp->zones = NULL; tmp->zones_num = 0; tmp->name = strdup(ci->values[0].value.string); if (tmp->name == NULL) { ERROR("bind plugin: strdup failed."); sfree(views); return -1; } for (int i = 0; i < ci->children_num; i++) { oconfig_item_t *child = ci->children + i; if (strcasecmp("QTypes", child->key) == 0) cf_util_get_boolean(child, &tmp->qtypes); else if (strcasecmp("ResolverStats", child->key) == 0) cf_util_get_boolean(child, &tmp->resolver_stats); else if (strcasecmp("CacheRRSets", child->key) == 0) cf_util_get_boolean(child, &tmp->cacherrsets); else if (strcasecmp("Zone", child->key) == 0) bind_config_add_view_zone(tmp, child); else { WARNING("bind plugin: Unknown configuration option " "`%s' in view `%s' will be ignored.", child->key, tmp->name); } } /* for (i = 0; i < ci->children_num; i++) */ views_num++; return 0; } /* }}} int bind_config_add_view */ static int bind_config(oconfig_item_t *ci) /* {{{ */ { for (int i = 0; i < ci->children_num; i++) { oconfig_item_t *child = ci->children + i; if (strcasecmp("Url", child->key) == 0) { cf_util_get_string(child, &url); } else if (strcasecmp("OpCodes", child->key) == 0) cf_util_get_boolean(child, &global_opcodes); else if (strcasecmp("QTypes", child->key) == 0) cf_util_get_boolean(child, &global_qtypes); else if (strcasecmp("ServerStats", child->key) == 0) cf_util_get_boolean(child, &global_server_stats); else if (strcasecmp("ZoneMaintStats", child->key) == 0) cf_util_get_boolean(child, &global_zone_maint_stats); else if (strcasecmp("ResolverStats", child->key) == 0) cf_util_get_boolean(child, &global_resolver_stats); else if (strcasecmp("MemoryStats", child->key) == 0) cf_util_get_boolean(child, &global_memory_stats); else if (strcasecmp("View", child->key) == 0) bind_config_add_view(child); else if (strcasecmp("ParseTime", child->key) == 0) cf_util_get_boolean(child, &config_parse_time); else if (strcasecmp("Timeout", child->key) == 0) cf_util_get_int(child, &timeout); else { WARNING("bind plugin: Unknown configuration option " "`%s' will be ignored.", child->key); } } return 0; } /* }}} int bind_config */ static int bind_init(void) /* {{{ */ { if (curl != NULL) return 0; curl = curl_easy_init(); if (curl == NULL) { ERROR("bind plugin: bind_init: curl_easy_init failed."); return -1; } curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1L); curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, bind_curl_callback); curl_easy_setopt(curl, CURLOPT_USERAGENT, COLLECTD_USERAGENT); curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, bind_curl_error); curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L); curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 50L); #ifdef HAVE_CURLOPT_TIMEOUT_MS curl_easy_setopt(curl, CURLOPT_TIMEOUT_MS, (timeout >= 0) ? (long)timeout : (long)CDTIME_T_TO_MS(plugin_get_interval())); #endif return 0; } /* }}} int bind_init */ static int bind_read(void) /* {{{ */ { if (curl == NULL) { ERROR("bind plugin: I don't have a CURL object."); return -1; } bind_buffer_fill = 0; curl_easy_setopt(curl, CURLOPT_URL, (url != NULL) ? url : BIND_DEFAULT_URL); if (curl_easy_perform(curl) != CURLE_OK) { ERROR("bind plugin: curl_easy_perform failed: %s", bind_curl_error); return -1; } int status = bind_xml(bind_buffer); if (status != 0) return -1; else return 0; } /* }}} int bind_read */ static int bind_shutdown(void) /* {{{ */ { if (curl != NULL) { curl_easy_cleanup(curl); curl = NULL; } return 0; } /* }}} int bind_shutdown */ void module_register(void) { plugin_register_complex_config("bind", bind_config); plugin_register_init("bind", bind_init); plugin_register_read("bind", bind_read); plugin_register_shutdown("bind", bind_shutdown); } /* void module_register */