2 * libunbound/worker.h - prototypes for worker methods.
4 * Copyright (c) 2007, NLnet Labs. All rights reserved.
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39 * This file declares the methods any worker has to implement.
42 #ifndef LIBUNBOUND_WORKER_H
43 #define LIBUNBOUND_WORKER_H
45 #include "sldns/sbuffer.h"
46 #include "util/data/packed_rrset.h" /* for enum sec_status */
55 * Worker service routine to send serviced queries to authoritative servers.
56 * @param qinfo: query info.
57 * @param flags: host order flags word, with opcode and CD bit.
58 * @param dnssec: if set, EDNS record will have DO bit set.
59 * @param want_dnssec: signatures needed.
60 * @param nocaps: ignore capsforid(if in config), do not perturb qname.
61 * @param addr: where to.
62 * @param addrlen: length of addr.
63 * @param zone: delegation point name.
64 * @param zonelen: length of zone name wireformat dname.
65 * @param ssl_upstream: use SSL for upstream queries.
66 * @param q: wich query state to reactivate upon return.
67 * @return: false on failure (memory or socket related). no query was
70 struct outbound_entry* libworker_send_query(struct query_info* qinfo,
71 uint16_t flags, int dnssec, int want_dnssec, int nocaps,
72 struct sockaddr_storage* addr, socklen_t addrlen, uint8_t* zone,
73 size_t zonelen, int ssl_upstream, struct module_qstate* q);
75 /** process incoming replies from the network */
76 int libworker_handle_reply(struct comm_point* c, void* arg, int error,
77 struct comm_reply* reply_info);
79 /** process incoming serviced query replies from the network */
80 int libworker_handle_service_reply(struct comm_point* c, void* arg, int error,
81 struct comm_reply* reply_info);
83 /** handle control command coming into server */
84 void libworker_handle_control_cmd(struct tube* tube, uint8_t* msg, size_t len,
87 /** mesh callback with fg results */
88 void libworker_fg_done_cb(void* arg, int rcode, sldns_buffer* buf,
89 enum sec_status s, char* why_bogus);
91 /** mesh callback with bg results */
92 void libworker_bg_done_cb(void* arg, int rcode, sldns_buffer* buf,
93 enum sec_status s, char* why_bogus);
95 /** mesh callback with event results */
96 void libworker_event_done_cb(void* arg, int rcode, struct sldns_buffer* buf,
97 enum sec_status s, char* why_bogus);
100 * Worker signal handler function. User argument is the worker itself.
101 * @param sig: signal number.
102 * @param arg: the worker (main worker) that handles signals.
104 void worker_sighandler(int sig, void* arg);
107 * Worker service routine to send serviced queries to authoritative servers.
108 * @param qinfo: query info.
109 * @param flags: host order flags word, with opcode and CD bit.
110 * @param dnssec: if set, EDNS record will have DO bit set.
111 * @param want_dnssec: signatures needed.
112 * @param nocaps: ignore capsforid(if in config), do not perturb qname.
113 * @param addr: where to.
114 * @param addrlen: length of addr.
115 * @param zone: wireformat dname of the zone.
116 * @param zonelen: length of zone name.
117 * @param ssl_upstream: use SSL for upstream queries.
118 * @param q: wich query state to reactivate upon return.
119 * @return: false on failure (memory or socket related). no query was
122 struct outbound_entry* worker_send_query(struct query_info* qinfo,
123 uint16_t flags, int dnssec, int want_dnssec, int nocaps,
124 struct sockaddr_storage* addr, socklen_t addrlen, uint8_t* zone,
125 size_t zonelen, int ssl_upstream, struct module_qstate* q);
128 * process control messages from the main thread. Frees the control
130 * @param tube: tube control message came on.
131 * @param msg: message contents. Is freed.
132 * @param len: length of message.
133 * @param error: if error (NETEVENT_*) happened.
134 * @param arg: user argument
136 void worker_handle_control_cmd(struct tube* tube, uint8_t* msg, size_t len,
137 int error, void* arg);
139 /** handles callbacks from listening event interface */
140 int worker_handle_request(struct comm_point* c, void* arg, int error,
141 struct comm_reply* repinfo);
143 /** process incoming replies from the network */
144 int worker_handle_reply(struct comm_point* c, void* arg, int error,
145 struct comm_reply* reply_info);
147 /** process incoming serviced query replies from the network */
148 int worker_handle_service_reply(struct comm_point* c, void* arg, int error,
149 struct comm_reply* reply_info);
151 /** cleanup the cache to remove all rrset IDs from it, arg is worker */
152 void worker_alloc_cleanup(void* arg);
154 /** statistics timer callback handler */
155 void worker_stat_timer_cb(void* arg);
157 /** probe timer callback handler */
158 void worker_probe_timer_cb(void* arg);
160 /** start accept callback handler */
161 void worker_start_accept(void* arg);
163 /** stop accept callback handler */
164 void worker_stop_accept(void* arg);
166 /** handle remote control accept callbacks */
167 int remote_accept_callback(struct comm_point*, void*, int, struct comm_reply*);
169 /** handle remote control data callbacks */
170 int remote_control_callback(struct comm_point*, void*, int, struct comm_reply*);
172 /** routine to printout option values over SSL */
173 void remote_get_opt_ssl(char* line, void* arg);
175 #endif /* LIBUNBOUND_WORKER_H */