2 * collectd - src/powerdns.c
3 * Copyright (C) 2007-2008 C-Ware, Inc.
4 * Copyright (C) 2008 Florian Forster
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.
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.
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
20 * Luke Heberling <lukeh at c-ware.com>
21 * Florian Forster <octo at collectd.org>
24 * Queries a PowerDNS control socket for statistics
31 #include "utils_llist.h"
39 #include <sys/types.h>
43 # define UNIX_PATH_MAX sizeof (((struct sockaddr_un *)0)->sun_path)
45 #define FUNC_ERROR(func) do { char errbuf[1024]; ERROR ("powerdns plugin: %s failed: %s", func, sstrerror (errno, errbuf, sizeof (errbuf))); } while (0)
47 #define SERVER_SOCKET LOCALSTATEDIR"/run/pdns.controlsocket"
48 #define SERVER_COMMAND "SHOW * \n"
50 #define RECURSOR_SOCKET LOCALSTATEDIR"/run/pdns_recursor.controlsocket"
51 #define RECURSOR_COMMAND "get noerror-answers nxdomain-answers " \
52 "servfail-answers sys-msec user-msec qa-latency cache-entries cache-hits " \
53 "cache-misses questions\n"
56 typedef struct list_item_s list_item_t;
65 int (*func) (list_item_t *item);
72 struct sockaddr_un sockaddr;
76 struct statname_lookup_s
80 const char *type_instance;
82 typedef struct statname_lookup_s statname_lookup_t;
84 /* Description of statistics returned by the recursor: {{{
85 all-outqueries counts the number of outgoing UDP queries since starting
86 answers-slow counts the number of queries answered after 1 second
87 answers0-1 counts the number of queries answered within 1 millisecond
88 answers1-10 counts the number of queries answered within 10 milliseconds
89 answers10-100 counts the number of queries answered within 100 milliseconds
90 answers100-1000 counts the number of queries answered within 1 second
91 cache-bytes size of the cache in bytes (since 3.3.1)
92 cache-entries shows the number of entries in the cache
93 cache-hits counts the number of cache hits since starting, this does not include hits that got answered from the packet-cache
94 cache-misses counts the number of cache misses since starting
95 case-mismatches counts the number of mismatches in character case since starting
96 chain-resends number of queries chained to existing outstanding query
97 client-parse-errors counts number of client packets that could not be parsed
98 concurrent-queries shows the number of MThreads currently running
99 dlg-only-drops number of records dropped because of delegation only setting
100 dont-outqueries number of outgoing queries dropped because of 'dont-query' setting (since 3.3)
101 edns-ping-matches number of servers that sent a valid EDNS PING respons
102 edns-ping-mismatches number of servers that sent an invalid EDNS PING response
103 failed-host-entries number of servers that failed to resolve
104 ipv6-outqueries number of outgoing queries over IPv6
105 ipv6-questions counts all End-user initiated queries with the RD bit set, received over IPv6 UDP
106 malloc-bytes returns the number of bytes allocated by the process (broken, always returns 0)
107 max-mthread-stack maximum amount of thread stack ever used
108 negcache-entries shows the number of entries in the Negative answer cache
109 no-packet-error number of errorneous received packets
110 noedns-outqueries number of queries sent out without EDNS
111 noerror-answers counts the number of times it answered NOERROR since starting
112 noping-outqueries number of queries sent out without ENDS PING
113 nsset-invalidations number of times an nsset was dropped because it no longer worked
114 nsspeeds-entries shows the number of entries in the NS speeds map
115 nxdomain-answers counts the number of times it answered NXDOMAIN since starting
116 outgoing-timeouts counts the number of timeouts on outgoing UDP queries since starting
117 over-capacity-drops questions dropped because over maximum concurrent query limit (since 3.2)
118 packetcache-bytes size of the packet cache in bytes (since 3.3.1)
119 packetcache-entries size of packet cache (since 3.2)
120 packetcache-hits packet cache hits (since 3.2)
121 packetcache-misses packet cache misses (since 3.2)
122 policy-drops packets dropped because of (Lua) policy decision
123 qa-latency shows the current latency average
124 questions counts all end-user initiated queries with the RD bit set
125 resource-limits counts number of queries that could not be performed because of resource limits
126 security-status security status based on security polling
127 server-parse-errors counts number of server replied packets that could not be parsed
128 servfail-answers counts the number of times it answered SERVFAIL since starting
129 spoof-prevents number of times PowerDNS considered itself spoofed, and dropped the data
130 sys-msec number of CPU milliseconds spent in 'system' mode
131 tcp-client-overflow number of times an IP address was denied TCP access because it already had too many connections
132 tcp-clients counts the number of currently active TCP/IP clients
133 tcp-outqueries counts the number of outgoing TCP queries since starting
134 tcp-questions counts all incoming TCP queries (since starting)
135 throttle-entries shows the number of entries in the throttle map
136 throttled-out counts the number of throttled outgoing UDP queries since starting
137 throttled-outqueries idem to throttled-out
138 unauthorized-tcp number of TCP questions denied because of allow-from restrictions
139 unauthorized-udp number of UDP questions denied because of allow-from restrictions
140 unexpected-packets number of answers from remote servers that were unexpected (might point to spoofing)
141 unreachables number of times nameservers were unreachable since starting
142 uptime number of seconds process has been running (since 3.1.5)
143 user-msec number of CPU milliseconds spent in 'user' mode
146 static const char* const default_server_fields[] = /* {{{ */
155 "recursing-questions",
161 static int default_server_fields_num = STATIC_ARRAY_SIZE (default_server_fields);
163 static statname_lookup_t lookup_table[] = /* {{{ */
165 /*********************
166 * Server statistics *
167 *********************/
169 {"recursing-questions", "dns_question", "recurse"},
170 {"tcp-queries", "dns_question", "tcp"},
171 {"udp-queries", "dns_question", "udp"},
172 {"rd-queries", "dns_question", "rd"},
175 {"recursing-answers", "dns_answer", "recurse"},
176 {"tcp-answers", "dns_answer", "tcp"},
177 {"udp-answers", "dns_answer", "udp"},
178 {"recursion-unanswered", "dns_answer", "recursion-unanswered"},
179 {"udp-answers-bytes", "total_bytes", "udp-answers-bytes"},
182 {"cache-bytes", "cache_size", "cache-bytes"},
183 {"packetcache-bytes", "cache_size", "packet-bytes"},
184 {"packetcache-entries", "cache_size", "packet-entries"},
185 {"packetcache-hit", "cache_result", "packet-hit"},
186 {"packetcache-hits", "cache_result", "packet-hit"},
187 {"packetcache-miss", "cache_result", "packet-miss"},
188 {"packetcache-misses", "cache_result", "packet-miss"},
189 {"packetcache-size", "cache_size", "packet"},
190 {"key-cache-size", "cache_size", "key"},
191 {"meta-cache-size", "cache_size", "meta"},
192 {"signature-cache-size", "cache_size", "signature"},
193 {"query-cache-hit", "cache_result", "query-hit"},
194 {"query-cache-miss", "cache_result", "query-miss"},
197 {"latency", "latency", NULL},
200 {"dnsupdate-answers", "dns_answer", "dnsupdate-answer"},
201 {"dnsupdate-changes", "dns_question", "dnsupdate-changes"},
202 {"dnsupdate-queries", "dns_question", "dnsupdate-queries"},
203 {"dnsupdate-refused", "dns_answer", "dnsupdate-refused"},
206 {"corrupt-packets", "ipt_packets", "corrupt"},
207 {"deferred-cache-inserts", "counter", "cache-deferred_insert"},
208 {"deferred-cache-lookup", "counter", "cache-deferred_lookup"},
209 {"dont-outqueries", "dns_question", "dont-outqueries"},
210 {"qsize-a", "cache_size", "answers"},
211 {"qsize-q", "cache_size", "questions"},
212 {"servfail-packets", "ipt_packets", "servfail"},
213 {"timedout-packets", "ipt_packets", "timeout"},
214 {"udp4-answers", "dns_answer", "udp4"},
215 {"udp4-queries", "dns_question", "queries-udp4"},
216 {"udp6-answers", "dns_answer", "udp6"},
217 {"udp6-queries", "dns_question", "queries-udp6"},
218 {"security-status", "dns_question", "security-status"},
219 {"udp-do-queries", "dns_question", "udp-do_queries"},
220 {"signatures", "counter", "signatures"},
222 /***********************
223 * Recursor statistics *
224 ***********************/
225 /* Answers by return code */
226 {"noerror-answers", "dns_rcode", "NOERROR"},
227 {"nxdomain-answers", "dns_rcode", "NXDOMAIN"},
228 {"servfail-answers", "dns_rcode", "SERVFAIL"},
230 /* CPU utilization */
231 {"sys-msec", "cpu", "system"},
232 {"user-msec", "cpu", "user"},
234 /* Question-to-answer latency */
235 {"qa-latency", "latency", NULL},
238 {"cache-entries", "cache_size", NULL},
239 {"cache-hits", "cache_result", "hit"},
240 {"cache-misses", "cache_result", "miss"},
242 /* Total number of questions.. */
243 {"questions", "dns_qtype", "total"},
245 /* All the other stuff.. */
246 {"all-outqueries", "dns_question", "outgoing"},
247 {"answers0-1", "dns_answer", "0_1"},
248 {"answers1-10", "dns_answer", "1_10"},
249 {"answers10-100", "dns_answer", "10_100"},
250 {"answers100-1000", "dns_answer", "100_1000"},
251 {"answers-slow", "dns_answer", "slow"},
252 {"case-mismatches", "counter", "case_mismatches"},
253 {"chain-resends", "dns_question", "chained"},
254 {"client-parse-errors", "counter", "drops-client_parse_error"},
255 {"concurrent-queries", "dns_question", "concurrent"},
256 {"dlg-only-drops", "counter", "drops-delegation_only"},
257 {"edns-ping-matches", "counter", "edns-ping_matches"},
258 {"edns-ping-mismatches", "counter", "edns-ping_mismatches"},
259 {"failed-host-entries", "counter", "entries-failed_host"},
260 {"ipv6-outqueries", "dns_question", "outgoing-ipv6"},
261 {"ipv6-questions", "dns_question", "incoming-ipv6"},
262 {"malloc-bytes", "gauge", "malloc_bytes"},
263 {"max-mthread-stack", "gauge", "max_mthread_stack"},
264 {"no-packet-error", "gauge", "no_packet_error"},
265 {"noedns-outqueries", "dns_question", "outgoing-noedns"},
266 {"noping-outqueries", "dns_question", "outgoing-noping"},
267 {"over-capacity-drops", "dns_question", "incoming-over_capacity"},
268 {"negcache-entries", "cache_size", "negative"},
269 {"nsspeeds-entries", "gauge", "entries-ns_speeds"},
270 {"nsset-invalidations", "counter", "ns_set_invalidation"},
271 {"outgoing-timeouts", "counter", "drops-timeout_outgoing"},
272 {"policy-drops", "counter", "drops-policy"},
273 {"resource-limits", "counter", "drops-resource_limit"},
274 {"server-parse-errors", "counter", "drops-server_parse_error"},
275 {"spoof-prevents", "counter", "drops-spoofed"},
276 {"tcp-client-overflow", "counter", "denied-client_overflow_tcp"},
277 {"tcp-clients", "gauge", "clients-tcp"},
278 {"tcp-outqueries", "dns_question", "outgoing-tcp"},
279 {"tcp-questions", "dns_question", "incoming-tcp"},
280 {"throttled-out", "dns_question", "outgoing-throttled"},
281 {"throttle-entries", "gauge", "entries-throttle"},
282 {"throttled-outqueries", "dns_question", "outgoing-throttle"},
283 {"unauthorized-tcp", "counter", "denied-unauthorized_tcp"},
284 {"unauthorized-udp", "counter", "denied-unauthorized_udp"},
285 {"unexpected-packets", "dns_answer", "unexpected"},
286 {"uptime", "uptime", NULL}
288 static int lookup_table_length = STATIC_ARRAY_SIZE (lookup_table);
290 static llist_t *list = NULL;
292 #define PDNS_LOCAL_SOCKPATH LOCALSTATEDIR"/run/"PACKAGE_NAME"-powerdns"
293 static char *local_sockpath = NULL;
295 /* TODO: Do this before 4.4:
296 * - Update the collectd.conf(5) manpage.
301 /* <https://doc.powerdns.com/md/recursor/stats/> */
302 static void submit (const char *plugin_instance, /* {{{ */
303 const char *pdns_type, const char *value_str)
305 value_list_t vl = VALUE_LIST_INIT;
308 const char *type = NULL;
309 const char *type_instance = NULL;
310 const data_set_t *ds;
314 for (i = 0; i < lookup_table_length; i++)
315 if (strcmp (lookup_table[i].name, pdns_type) == 0)
318 if (i >= lookup_table_length)
320 INFO ("powerdns plugin: submit: Not found in lookup table: %s = %s;",
321 pdns_type, value_str);
325 if (lookup_table[i].type == NULL)
328 type = lookup_table[i].type;
329 type_instance = lookup_table[i].type_instance;
331 ds = plugin_get_ds (type);
334 ERROR ("powerdns plugin: The lookup table returned type `%s', "
335 "but I cannot find it via `plugin_get_ds'.",
342 ERROR ("powerdns plugin: type `%s' has %zu data sources, "
343 "but I can only handle one.",
348 if (0 != parse_value (value_str, &value, ds->ds[0].type))
350 ERROR ("powerdns plugin: Cannot convert `%s' "
351 "to a number.", value_str);
357 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
358 sstrncpy (vl.plugin, "powerdns", sizeof (vl.plugin));
359 sstrncpy (vl.type, type, sizeof (vl.type));
360 if (type_instance != NULL)
361 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
362 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
364 plugin_dispatch_values (&vl);
365 } /* }}} static void submit */
367 static int powerdns_get_data_dgram (list_item_t *item, /* {{{ */
369 size_t *ret_buffer_size)
376 size_t buffer_size = 0;
378 struct sockaddr_un sa_unix = { 0 };
380 struct timeval stv_timeout;
381 cdtime_t cdt_timeout;
383 sd = socket (PF_UNIX, item->socktype, 0);
386 FUNC_ERROR ("socket");
390 sa_unix.sun_family = AF_UNIX;
391 sstrncpy (sa_unix.sun_path,
392 (local_sockpath != NULL) ? local_sockpath : PDNS_LOCAL_SOCKPATH,
393 sizeof (sa_unix.sun_path));
395 status = unlink (sa_unix.sun_path);
396 if ((status != 0) && (errno != ENOENT))
398 FUNC_ERROR ("unlink");
405 /* We need to bind to a specific path, because this is a datagram socket
406 * and otherwise the daemon cannot answer. */
407 status = bind (sd, (struct sockaddr *) &sa_unix, sizeof (sa_unix));
414 /* Make the socket writeable by the daemon.. */
415 status = chmod (sa_unix.sun_path, 0666);
418 FUNC_ERROR ("chmod");
422 cdt_timeout = plugin_get_interval () * 3 / 4;
423 if (cdt_timeout < TIME_T_TO_CDTIME_T (2))
424 cdt_timeout = TIME_T_TO_CDTIME_T (2);
426 CDTIME_T_TO_TIMEVAL (cdt_timeout, &stv_timeout);
428 status = setsockopt (sd, SOL_SOCKET, SO_RCVTIMEO, &stv_timeout, sizeof (stv_timeout));
431 FUNC_ERROR ("setsockopt");
435 status = connect (sd, (struct sockaddr *) &item->sockaddr,
436 sizeof (item->sockaddr));
439 FUNC_ERROR ("connect");
443 status = send (sd, item->command, strlen (item->command), 0);
450 status = recv (sd, temp, sizeof (temp), /* flags = */ 0);
456 buffer_size = status + 1;
461 unlink (sa_unix.sun_path);
466 assert (buffer_size > 0);
467 buffer = malloc (buffer_size);
470 FUNC_ERROR ("malloc");
474 memcpy (buffer, temp, buffer_size - 1);
475 buffer[buffer_size - 1] = 0;
477 *ret_buffer = buffer;
478 *ret_buffer_size = buffer_size;
481 } /* }}} int powerdns_get_data_dgram */
483 static int powerdns_get_data_stream (list_item_t *item, /* {{{ */
485 size_t *ret_buffer_size)
492 size_t buffer_size = 0;
494 sd = socket (PF_UNIX, item->socktype, 0);
497 FUNC_ERROR ("socket");
501 struct timeval timeout;
504 status = setsockopt (sd, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof (timeout));
507 FUNC_ERROR ("setsockopt");
512 status = connect (sd, (struct sockaddr *) &item->sockaddr,
513 sizeof (item->sockaddr));
516 FUNC_ERROR ("connect");
521 /* strlen + 1, because we need to send the terminating NULL byte, too. */
522 status = send (sd, item->command, strlen (item->command) + 1,
535 status = recv (sd, temp, sizeof (temp), /* flags = */ 0);
541 else if (status == 0)
544 buffer_new = realloc (buffer, buffer_size + status + 1);
545 if (buffer_new == NULL)
547 FUNC_ERROR ("realloc");
553 memcpy (buffer + buffer_size, temp, status);
554 buffer_size += status;
555 buffer[buffer_size] = 0;
565 assert (status == 0);
566 *ret_buffer = buffer;
567 *ret_buffer_size = buffer_size;
571 } /* }}} int powerdns_get_data_stream */
573 static int powerdns_get_data (list_item_t *item, char **ret_buffer,
574 size_t *ret_buffer_size)
576 if (item->socktype == SOCK_DGRAM)
577 return (powerdns_get_data_dgram (item, ret_buffer, ret_buffer_size));
578 else if (item->socktype == SOCK_STREAM)
579 return (powerdns_get_data_stream (item, ret_buffer, ret_buffer_size));
582 ERROR ("powerdns plugin: Unknown socket type: %i", (int) item->socktype);
585 } /* int powerdns_get_data */
587 static int powerdns_read_server (list_item_t *item) /* {{{ */
590 size_t buffer_size = 0;
599 const char* const *fields;
602 if (item->command == NULL)
603 item->command = strdup (SERVER_COMMAND);
604 if (item->command == NULL)
606 ERROR ("powerdns plugin: strdup failed.");
610 status = powerdns_get_data (item, &buffer, &buffer_size);
614 if (item->fields_num != 0)
616 fields = (const char* const *) item->fields;
617 fields_num = item->fields_num;
621 fields = default_server_fields;
622 fields_num = default_server_fields_num;
625 assert (fields != NULL);
626 assert (fields_num > 0);
628 /* corrupt-packets=0,deferred-cache-inserts=0,deferred-cache-lookup=0,latency=0,packetcache-hit=0,packetcache-miss=0,packetcache-size=0,qsize-q=0,query-cache-hit=0,query-cache-miss=0,recursing-answers=0,recursing-questions=0,servfail-packets=0,tcp-answers=0,tcp-queries=0,timedout-packets=0,udp-answers=0,udp-queries=0,udp4-answers=0,udp4-queries=0,udp6-answers=0,udp6-queries=0, */
631 while ((key = strtok_r (dummy, ",", &saveptr)) != NULL)
635 value = strchr (key, '=');
642 if (value[0] == '\0')
645 /* Check if this item was requested. */
647 for (i = 0; i < fields_num; i++)
648 if (strcasecmp (key, fields[i]) == 0)
653 submit (item->instance, key, value);
654 } /* while (strtok_r) */
659 } /* }}} int powerdns_read_server */
662 * powerdns_update_recursor_command
664 * Creates a string that holds the command to be sent to the recursor. This
665 * string is stores in the `command' member of the `list_item_t' passed to the
666 * function. This function is called by `powerdns_read_recursor'.
668 static int powerdns_update_recursor_command (list_item_t *li) /* {{{ */
676 if (li->fields_num < 1)
678 sstrncpy (buffer, RECURSOR_COMMAND, sizeof (buffer));
682 sstrncpy (buffer, "get ", sizeof (buffer));
683 status = strjoin (&buffer[strlen("get ")], sizeof (buffer) - strlen ("get "),
684 li->fields, li->fields_num,
685 /* seperator = */ " ");
688 ERROR ("powerdns plugin: strjoin failed.");
691 buffer[sizeof (buffer) - 1] = 0;
692 size_t len = strlen (buffer);
693 if (len < sizeof (buffer) - 2)
696 buffer[len++] = '\n';
697 buffer[len++] = '\0';
701 buffer[sizeof (buffer) - 1] = 0;
702 li->command = strdup (buffer);
703 if (li->command == NULL)
705 ERROR ("powerdns plugin: strdup failed.");
710 } /* }}} int powerdns_update_recursor_command */
712 static int powerdns_read_recursor (list_item_t *item) /* {{{ */
715 size_t buffer_size = 0;
726 if (item->command == NULL)
728 status = powerdns_update_recursor_command (item);
731 ERROR ("powerdns plugin: powerdns_update_recursor_command failed.");
735 DEBUG ("powerdns plugin: powerdns_read_recursor: item->command = %s;",
738 assert (item->command != NULL);
740 status = powerdns_get_data (item, &buffer, &buffer_size);
743 ERROR ("powerdns plugin: powerdns_get_data failed.");
747 keys_list = strdup (item->command);
748 if (keys_list == NULL)
750 FUNC_ERROR ("strdup");
756 value_saveptr = NULL;
758 /* Skip the `get' at the beginning */
759 strtok_r (keys_list, " \t", &key_saveptr);
762 while ((value = strtok_r (dummy, " \t\n\r", &value_saveptr)) != NULL)
766 key = strtok_r (NULL, " \t", &key_saveptr);
770 submit (item->instance, key, value);
771 } /* while (strtok_r) */
777 } /* }}} int powerdns_read_recursor */
779 static int powerdns_config_add_collect (list_item_t *li, /* {{{ */
784 if (ci->values_num < 1)
786 WARNING ("powerdns plugin: The `Collect' option needs "
787 "at least one argument.");
791 for (int i = 0; i < ci->values_num; i++)
792 if (ci->values[i].type != OCONFIG_TYPE_STRING)
794 WARNING ("powerdns plugin: Only string arguments are allowed to "
795 "the `Collect' option.");
799 temp = realloc (li->fields,
800 sizeof (char *) * (li->fields_num + ci->values_num));
803 WARNING ("powerdns plugin: realloc failed.");
808 for (int i = 0; i < ci->values_num; i++)
810 li->fields[li->fields_num] = strdup (ci->values[i].value.string);
811 if (li->fields[li->fields_num] == NULL)
813 WARNING ("powerdns plugin: strdup failed.");
819 /* Invalidate a previously computed command */
823 } /* }}} int powerdns_config_add_collect */
825 static int powerdns_config_add_server (oconfig_item_t *ci) /* {{{ */
832 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
834 WARNING ("powerdns plugin: `%s' needs exactly one string argument.",
839 item = calloc (1, sizeof (*item));
842 ERROR ("powerdns plugin: calloc failed.");
846 item->instance = strdup (ci->values[0].value.string);
847 if (item->instance == NULL)
849 ERROR ("powerdns plugin: strdup failed.");
855 * Set default values for the members of list_item_t
857 if (strcasecmp ("Server", ci->key) == 0)
859 item->server_type = SRV_AUTHORITATIVE;
860 item->func = powerdns_read_server;
861 item->socktype = SOCK_STREAM;
862 socket_temp = strdup (SERVER_SOCKET);
864 else if (strcasecmp ("Recursor", ci->key) == 0)
866 item->server_type = SRV_RECURSOR;
867 item->func = powerdns_read_recursor;
868 item->socktype = SOCK_DGRAM;
869 socket_temp = strdup (RECURSOR_SOCKET);
873 /* We must never get here.. */
879 for (int i = 0; i < ci->children_num; i++)
881 oconfig_item_t *option = ci->children + i;
883 if (strcasecmp ("Collect", option->key) == 0)
884 status = powerdns_config_add_collect (item, option);
885 else if (strcasecmp ("Socket", option->key) == 0)
886 status = cf_util_get_string (option, &socket_temp);
889 ERROR ("powerdns plugin: Option `%s' not allowed here.", option->key);
901 if (socket_temp == NULL)
903 ERROR ("powerdns plugin: socket_temp == NULL.");
908 item->sockaddr.sun_family = AF_UNIX;
909 sstrncpy (item->sockaddr.sun_path, socket_temp,
910 sizeof (item->sockaddr.sun_path));
912 e = llentry_create (item->instance, item);
915 ERROR ("powerdns plugin: llentry_create failed.");
919 llist_append (list, e);
931 DEBUG ("powerdns plugin: Add server: instance = %s;", item->instance);
935 } /* }}} int powerdns_config_add_server */
937 static int powerdns_config (oconfig_item_t *ci) /* {{{ */
939 DEBUG ("powerdns plugin: powerdns_config (ci = %p);", (void *) ci);
943 list = llist_create ();
947 ERROR ("powerdns plugin: `llist_create' failed.");
952 for (int i = 0; i < ci->children_num; i++)
954 oconfig_item_t *option = ci->children + i;
956 if ((strcasecmp ("Server", option->key) == 0)
957 || (strcasecmp ("Recursor", option->key) == 0))
958 powerdns_config_add_server (option);
959 else if (strcasecmp ("LocalSocket", option->key) == 0)
961 if ((option->values_num != 1) || (option->values[0].type != OCONFIG_TYPE_STRING))
963 WARNING ("powerdns plugin: `%s' needs exactly one string argument.", option->key);
967 char *temp = strdup (option->values[0].value.string);
970 sfree (local_sockpath);
971 local_sockpath = temp;
976 ERROR ("powerdns plugin: Option `%s' not allowed here.", option->key);
978 } /* for (i = 0; i < ci->children_num; i++) */
981 } /* }}} int powerdns_config */
983 static int powerdns_read (void)
985 for (llentry_t *e = llist_head (list); e != NULL; e = e->next)
987 list_item_t *item = e->value;
992 } /* static int powerdns_read */
994 static int powerdns_shutdown (void)
999 for (llentry_t *e = llist_head (list); e != NULL; e = e->next)
1001 list_item_t *item = (list_item_t *) e->value;
1004 sfree (item->instance);
1005 sfree (item->command);
1009 llist_destroy (list);
1013 } /* static int powerdns_shutdown */
1015 void module_register (void)
1017 plugin_register_complex_config ("powerdns", powerdns_config);
1018 plugin_register_read ("powerdns", powerdns_read);
1019 plugin_register_shutdown ("powerdns", powerdns_shutdown );
1020 } /* void module_register */
1022 /* vim: set sw=2 sts=2 ts=8 fdm=marker : */