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180 lines
6.8 KiB
C
180 lines
6.8 KiB
C
/*
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* libunbound/worker.h - prototypes for worker methods.
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*
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* Copyright (c) 2007, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* This file declares the methods any worker has to implement.
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*/
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#ifndef LIBUNBOUND_WORKER_H
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#define LIBUNBOUND_WORKER_H
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#include "ldns/sbuffer.h"
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#include "util/data/packed_rrset.h" /* for enum sec_status */
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struct comm_reply;
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struct comm_point;
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struct module_qstate;
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struct tube;
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/**
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* Worker service routine to send serviced queries to authoritative servers.
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* @param qname: query name. (host order)
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* @param qnamelen: length in bytes of qname, including trailing 0.
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* @param qtype: query type. (host order)
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* @param qclass: query class. (host order)
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* @param flags: host order flags word, with opcode and CD bit.
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* @param dnssec: if set, EDNS record will have DO bit set.
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* @param want_dnssec: signatures needed.
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* @param nocaps: ignore capsforid(if in config), do not perturb qname.
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* @param addr: where to.
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* @param addrlen: length of addr.
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* @param zone: delegation point name.
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* @param zonelen: length of zone name wireformat dname.
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* @param q: wich query state to reactivate upon return.
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* @return: false on failure (memory or socket related). no query was
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* sent.
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*/
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struct outbound_entry* libworker_send_query(uint8_t* qname, size_t qnamelen,
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uint16_t qtype, uint16_t qclass, uint16_t flags, int dnssec,
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int want_dnssec, int nocaps, struct sockaddr_storage* addr,
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socklen_t addrlen, uint8_t* zone, size_t zonelen,
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struct module_qstate* q);
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/** process incoming replies from the network */
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int libworker_handle_reply(struct comm_point* c, void* arg, int error,
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struct comm_reply* reply_info);
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/** process incoming serviced query replies from the network */
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int libworker_handle_service_reply(struct comm_point* c, void* arg, int error,
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struct comm_reply* reply_info);
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/** handle control command coming into server */
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void libworker_handle_control_cmd(struct tube* tube, uint8_t* msg, size_t len,
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int err, void* arg);
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/** mesh callback with fg results */
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void libworker_fg_done_cb(void* arg, int rcode, sldns_buffer* buf,
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enum sec_status s, char* why_bogus);
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/** mesh callback with bg results */
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void libworker_bg_done_cb(void* arg, int rcode, sldns_buffer* buf,
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enum sec_status s, char* why_bogus);
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/** mesh callback with event results */
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void libworker_event_done_cb(void* arg, int rcode, struct sldns_buffer* buf,
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enum sec_status s, char* why_bogus);
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/**
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* Worker signal handler function. User argument is the worker itself.
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* @param sig: signal number.
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* @param arg: the worker (main worker) that handles signals.
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*/
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void worker_sighandler(int sig, void* arg);
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/**
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* Worker service routine to send serviced queries to authoritative servers.
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* @param qname: query name. (host order)
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* @param qnamelen: length in bytes of qname, including trailing 0.
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* @param qtype: query type. (host order)
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* @param qclass: query class. (host order)
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* @param flags: host order flags word, with opcode and CD bit.
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* @param dnssec: if set, EDNS record will have DO bit set.
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* @param want_dnssec: signatures needed.
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* @param nocaps: ignore capsforid(if in config), do not perturb qname.
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* @param addr: where to.
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* @param addrlen: length of addr.
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* @param zone: wireformat dname of the zone.
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* @param zonelen: length of zone name.
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* @param q: wich query state to reactivate upon return.
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* @return: false on failure (memory or socket related). no query was
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* sent.
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*/
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struct outbound_entry* worker_send_query(uint8_t* qname, size_t qnamelen,
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uint16_t qtype, uint16_t qclass, uint16_t flags, int dnssec,
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int want_dnssec, int nocaps, struct sockaddr_storage* addr,
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socklen_t addrlen, uint8_t* zone, size_t zonelen,
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struct module_qstate* q);
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/**
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* process control messages from the main thread. Frees the control
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* command message.
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* @param tube: tube control message came on.
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* @param msg: message contents. Is freed.
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* @param len: length of message.
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* @param error: if error (NETEVENT_*) happened.
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* @param arg: user argument
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*/
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void worker_handle_control_cmd(struct tube* tube, uint8_t* msg, size_t len,
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int error, void* arg);
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/** handles callbacks from listening event interface */
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int worker_handle_request(struct comm_point* c, void* arg, int error,
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struct comm_reply* repinfo);
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/** process incoming replies from the network */
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int worker_handle_reply(struct comm_point* c, void* arg, int error,
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struct comm_reply* reply_info);
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/** process incoming serviced query replies from the network */
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int worker_handle_service_reply(struct comm_point* c, void* arg, int error,
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struct comm_reply* reply_info);
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/** cleanup the cache to remove all rrset IDs from it, arg is worker */
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void worker_alloc_cleanup(void* arg);
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/** statistics timer callback handler */
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void worker_stat_timer_cb(void* arg);
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/** probe timer callback handler */
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void worker_probe_timer_cb(void* arg);
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/** start accept callback handler */
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void worker_start_accept(void* arg);
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/** stop accept callback handler */
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void worker_stop_accept(void* arg);
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/** handle remote control accept callbacks */
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int remote_accept_callback(struct comm_point*, void*, int, struct comm_reply*);
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/** handle remote control data callbacks */
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int remote_control_callback(struct comm_point*, void*, int, struct comm_reply*);
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/** routine to printout option values over SSL */
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void remote_get_opt_ssl(char* line, void* arg);
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#endif /* LIBUNBOUND_WORKER_H */
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