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 tls_auth_name: if ssl_upstream, use this name with TLS
68 * @param q: wich query state to reactivate upon return.
69 * @return: false on failure (memory or socket related). no query was
72 struct outbound_entry* libworker_send_query(struct query_info* qinfo,
73 uint16_t flags, int dnssec, int want_dnssec, int nocaps,
74 struct sockaddr_storage* addr, socklen_t addrlen, uint8_t* zone,
75 size_t zonelen, int ssl_upstream, char* tls_auth_name,
76 struct module_qstate* q);
78 /** process incoming replies from the network */
79 int libworker_handle_reply(struct comm_point* c, void* arg, int error,
80 struct comm_reply* reply_info);
82 /** process incoming serviced query replies from the network */
83 int libworker_handle_service_reply(struct comm_point* c, void* arg, int error,
84 struct comm_reply* reply_info);
86 /** handle control command coming into server */
87 void libworker_handle_control_cmd(struct tube* tube, uint8_t* msg, size_t len,
90 /** mesh callback with fg results */
91 void libworker_fg_done_cb(void* arg, int rcode, sldns_buffer* buf,
92 enum sec_status s, char* why_bogus, int was_ratelimited);
94 /** mesh callback with bg results */
95 void libworker_bg_done_cb(void* arg, int rcode, sldns_buffer* buf,
96 enum sec_status s, char* why_bogus, int was_ratelimited);
98 /** mesh callback with event results */
99 void libworker_event_done_cb(void* arg, int rcode, struct sldns_buffer* buf,
100 enum sec_status s, char* why_bogus, int was_ratelimited);
103 * Worker signal handler function. User argument is the worker itself.
104 * @param sig: signal number.
105 * @param arg: the worker (main worker) that handles signals.
107 void worker_sighandler(int sig, void* arg);
110 * Worker service routine to send serviced queries to authoritative servers.
111 * @param qinfo: query info.
112 * @param flags: host order flags word, with opcode and CD bit.
113 * @param dnssec: if set, EDNS record will have DO bit set.
114 * @param want_dnssec: signatures needed.
115 * @param nocaps: ignore capsforid(if in config), do not perturb qname.
116 * @param addr: where to.
117 * @param addrlen: length of addr.
118 * @param zone: wireformat dname of the zone.
119 * @param zonelen: length of zone name.
120 * @param ssl_upstream: use SSL for upstream queries.
121 * @param tls_auth_name: if ssl_upstream, use this name with TLS
123 * @param q: wich query state to reactivate upon return.
124 * @return: false on failure (memory or socket related). no query was
127 struct outbound_entry* worker_send_query(struct query_info* qinfo,
128 uint16_t flags, int dnssec, int want_dnssec, int nocaps,
129 struct sockaddr_storage* addr, socklen_t addrlen, uint8_t* zone,
130 size_t zonelen, int ssl_upstream, char* tls_auth_name,
131 struct module_qstate* q);
134 * process control messages from the main thread. Frees the control
136 * @param tube: tube control message came on.
137 * @param msg: message contents. Is freed.
138 * @param len: length of message.
139 * @param error: if error (NETEVENT_*) happened.
140 * @param arg: user argument
142 void worker_handle_control_cmd(struct tube* tube, uint8_t* msg, size_t len,
143 int error, void* arg);
145 /** handles callbacks from listening event interface */
146 int worker_handle_request(struct comm_point* c, void* arg, int error,
147 struct comm_reply* repinfo);
149 /** process incoming replies from the network */
150 int worker_handle_reply(struct comm_point* c, void* arg, int error,
151 struct comm_reply* reply_info);
153 /** process incoming serviced query replies from the network */
154 int worker_handle_service_reply(struct comm_point* c, void* arg, int error,
155 struct comm_reply* reply_info);
157 /** cleanup the cache to remove all rrset IDs from it, arg is worker */
158 void worker_alloc_cleanup(void* arg);
160 /** statistics timer callback handler */
161 void worker_stat_timer_cb(void* arg);
163 /** probe timer callback handler */
164 void worker_probe_timer_cb(void* arg);
166 /** start accept callback handler */
167 void worker_start_accept(void* arg);
169 /** stop accept callback handler */
170 void worker_stop_accept(void* arg);
172 /** handle remote control accept callbacks */
173 int remote_accept_callback(struct comm_point*, void*, int, struct comm_reply*);
175 /** handle remote control data callbacks */
176 int remote_control_callback(struct comm_point*, void*, int, struct comm_reply*);
178 /** routine to printout option values over SSL */
179 void remote_get_opt_ssl(char* line, void* arg);
181 #endif /* LIBUNBOUND_WORKER_H */