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
30 #include "configfile.h"
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)
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;",
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, &values[0], ds->ds[0].type))
350 ERROR ("powerdns plugin: Cannot convert `%s' "
351 "to a number.", value);
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)
637 value = strchr (key, '=');
644 if (value[0] == '\0')
647 /* Check if this item was requested. */
648 for (i = 0; i < fields_num; i++)
649 if (strcasecmp (key, fields[i]) == 0)
654 submit (item->instance, key, value);
655 } /* while (strtok_r) */
660 } /* }}} int powerdns_read_server */
663 * powerdns_update_recursor_command
665 * Creates a string that holds the command to be sent to the recursor. This
666 * string is stores in the `command' member of the `list_item_t' passed to the
667 * function. This function is called by `powerdns_read_recursor'.
669 static int powerdns_update_recursor_command (list_item_t *li) /* {{{ */
677 if (li->fields_num < 1)
679 sstrncpy (buffer, RECURSOR_COMMAND, sizeof (buffer));
683 sstrncpy (buffer, "get ", sizeof (buffer));
684 status = strjoin (&buffer[strlen("get ")], sizeof (buffer) - strlen ("get "),
685 li->fields, li->fields_num,
686 /* seperator = */ " ");
689 ERROR ("powerdns plugin: strjoin failed.");
692 buffer[sizeof (buffer) - 1] = 0;
693 size_t len = strlen (buffer);
694 if (len < sizeof (buffer) - 2)
697 buffer[len++] = '\n';
698 buffer[len++] = '\0';
702 buffer[sizeof (buffer) - 1] = 0;
703 li->command = strdup (buffer);
704 if (li->command == NULL)
706 ERROR ("powerdns plugin: strdup failed.");
711 } /* }}} int powerdns_update_recursor_command */
713 static int powerdns_read_recursor (list_item_t *item) /* {{{ */
716 size_t buffer_size = 0;
727 if (item->command == NULL)
729 status = powerdns_update_recursor_command (item);
732 ERROR ("powerdns plugin: powerdns_update_recursor_command failed.");
736 DEBUG ("powerdns plugin: powerdns_read_recursor: item->command = %s;",
739 assert (item->command != NULL);
741 status = powerdns_get_data (item, &buffer, &buffer_size);
744 ERROR ("powerdns plugin: powerdns_get_data failed.");
748 keys_list = strdup (item->command);
749 if (keys_list == NULL)
751 FUNC_ERROR ("strdup");
757 value_saveptr = NULL;
759 /* Skip the `get' at the beginning */
760 strtok_r (keys_list, " \t", &key_saveptr);
763 while ((value = strtok_r (dummy, " \t\n\r", &value_saveptr)) != NULL)
767 key = strtok_r (NULL, " \t", &key_saveptr);
771 submit (item->instance, key, value);
772 } /* while (strtok_r) */
778 } /* }}} int powerdns_read_recursor */
780 static int powerdns_config_add_collect (list_item_t *li, /* {{{ */
786 if (ci->values_num < 1)
788 WARNING ("powerdns plugin: The `Collect' option needs "
789 "at least one argument.");
793 for (i = 0; i < ci->values_num; i++)
794 if (ci->values[i].type != OCONFIG_TYPE_STRING)
796 WARNING ("powerdns plugin: Only string arguments are allowed to "
797 "the `Collect' option.");
801 temp = realloc (li->fields,
802 sizeof (char *) * (li->fields_num + ci->values_num));
805 WARNING ("powerdns plugin: realloc failed.");
810 for (i = 0; i < ci->values_num; i++)
812 li->fields[li->fields_num] = strdup (ci->values[i].value.string);
813 if (li->fields[li->fields_num] == NULL)
815 WARNING ("powerdns plugin: strdup failed.");
821 /* Invalidate a previously computed command */
825 } /* }}} int powerdns_config_add_collect */
827 static int powerdns_config_add_server (oconfig_item_t *ci) /* {{{ */
835 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
837 WARNING ("powerdns plugin: `%s' needs exactly one string argument.",
842 item = calloc (1, sizeof (*item));
845 ERROR ("powerdns plugin: calloc failed.");
849 item->instance = strdup (ci->values[0].value.string);
850 if (item->instance == NULL)
852 ERROR ("powerdns plugin: strdup failed.");
858 * Set default values for the members of list_item_t
860 if (strcasecmp ("Server", ci->key) == 0)
862 item->server_type = SRV_AUTHORITATIVE;
863 item->func = powerdns_read_server;
864 item->socktype = SOCK_STREAM;
865 socket_temp = strdup (SERVER_SOCKET);
867 else if (strcasecmp ("Recursor", ci->key) == 0)
869 item->server_type = SRV_RECURSOR;
870 item->func = powerdns_read_recursor;
871 item->socktype = SOCK_DGRAM;
872 socket_temp = strdup (RECURSOR_SOCKET);
876 /* We must never get here.. */
882 for (i = 0; i < ci->children_num; i++)
884 oconfig_item_t *option = ci->children + i;
886 if (strcasecmp ("Collect", option->key) == 0)
887 status = powerdns_config_add_collect (item, option);
888 else if (strcasecmp ("Socket", option->key) == 0)
889 status = cf_util_get_string (option, &socket_temp);
892 ERROR ("powerdns plugin: Option `%s' not allowed here.", option->key);
904 if (socket_temp == NULL)
906 ERROR ("powerdns plugin: socket_temp == NULL.");
911 item->sockaddr.sun_family = AF_UNIX;
912 sstrncpy (item->sockaddr.sun_path, socket_temp,
913 sizeof (item->sockaddr.sun_path));
915 e = llentry_create (item->instance, item);
918 ERROR ("powerdns plugin: llentry_create failed.");
922 llist_append (list, e);
934 DEBUG ("powerdns plugin: Add server: instance = %s;", item->instance);
938 } /* }}} int powerdns_config_add_server */
940 static int powerdns_config (oconfig_item_t *ci) /* {{{ */
944 DEBUG ("powerdns plugin: powerdns_config (ci = %p);", (void *) ci);
948 list = llist_create ();
952 ERROR ("powerdns plugin: `llist_create' failed.");
957 for (i = 0; i < ci->children_num; i++)
959 oconfig_item_t *option = ci->children + i;
961 if ((strcasecmp ("Server", option->key) == 0)
962 || (strcasecmp ("Recursor", option->key) == 0))
963 powerdns_config_add_server (option);
964 else if (strcasecmp ("LocalSocket", option->key) == 0)
966 if ((option->values_num != 1) || (option->values[0].type != OCONFIG_TYPE_STRING))
968 WARNING ("powerdns plugin: `%s' needs exactly one string argument.", option->key);
972 char *temp = strdup (option->values[0].value.string);
975 sfree (local_sockpath);
976 local_sockpath = temp;
981 ERROR ("powerdns plugin: Option `%s' not allowed here.", option->key);
983 } /* for (i = 0; i < ci->children_num; i++) */
986 } /* }}} int powerdns_config */
988 static int powerdns_read (void)
992 for (e = llist_head (list); e != NULL; e = e->next)
994 list_item_t *item = e->value;
999 } /* static int powerdns_read */
1001 static int powerdns_shutdown (void)
1008 for (e = llist_head (list); e != NULL; e = e->next)
1010 list_item_t *item = (list_item_t *) e->value;
1013 sfree (item->instance);
1014 sfree (item->command);
1018 llist_destroy (list);
1022 } /* static int powerdns_shutdown */
1024 void module_register (void)
1026 plugin_register_complex_config ("powerdns", powerdns_config);
1027 plugin_register_read ("powerdns", powerdns_read);
1028 plugin_register_shutdown ("powerdns", powerdns_shutdown );
1029 } /* void module_register */
1031 /* vim: set sw=2 sts=2 ts=8 fdm=marker : */