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These files were pulled from the 1.6.3 release tarball. This new version builds against OpenSSL version 1.1 which will be the default in the new Debian Stable which is due to be released RealSoonNow (tm).
184 lines
5.4 KiB
C
184 lines
5.4 KiB
C
/*
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* daemon/daemon.h - collection of workers that handles requests.
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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
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE 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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* The daemon consists of global settings and a number of workers.
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*/
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#ifndef DAEMON_H
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#define DAEMON_H
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#include "util/locks.h"
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#include "util/alloc.h"
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#include "services/modstack.h"
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#ifdef UB_ON_WINDOWS
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# include "util/winsock_event.h"
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#endif
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struct config_file;
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struct worker;
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struct listen_port;
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struct slabhash;
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struct module_env;
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struct rrset_cache;
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struct acl_list;
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struct local_zones;
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struct views;
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struct ub_randstate;
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struct daemon_remote;
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struct respip_set;
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struct shm_main_info;
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#include "dnstap/dnstap_config.h"
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#ifdef USE_DNSTAP
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struct dt_env;
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#endif
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#include "dnscrypt/dnscrypt_config.h"
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#ifdef USE_DNSCRYPT
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struct dnsc_env;
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#endif
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/**
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* Structure holding worker list.
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* Holds globally visible information.
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*/
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struct daemon {
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/** The config settings */
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struct config_file* cfg;
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/** the chroot dir in use, NULL if none */
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char* chroot;
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/** pidfile that is used */
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char* pidfile;
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/** port number that has ports opened. */
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int listening_port;
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/** array of listening ports, opened. Listening ports per worker,
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* or just one element[0] shared by the worker threads. */
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struct listen_port** ports;
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/** size of ports array */
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size_t num_ports;
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/** reuseport is enabled if true */
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int reuseport;
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/** port number for remote that has ports opened. */
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int rc_port;
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/** listening ports for remote control */
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struct listen_port* rc_ports;
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/** remote control connections management (for first worker) */
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struct daemon_remote* rc;
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/** ssl context for listening to dnstcp over ssl, and connecting ssl */
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void* listen_sslctx, *connect_sslctx;
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/** num threads allocated */
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int num;
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/** the worker entries */
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struct worker** workers;
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/** do we need to exit unbound (or is it only a reload?) */
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int need_to_exit;
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/** master random table ; used for port div between threads on reload*/
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struct ub_randstate* rand;
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/** master allocation cache */
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struct alloc_cache superalloc;
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/** the module environment master value, copied and changed by threads*/
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struct module_env* env;
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/** stack of module callbacks */
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struct module_stack mods;
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/** access control, which client IPs are allowed to connect */
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struct acl_list* acl;
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/** local authority zones */
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struct local_zones* local_zones;
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/** last time of statistics printout */
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struct timeval time_last_stat;
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/** time when daemon started */
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struct timeval time_boot;
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/** views structure containing view tree */
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struct views* views;
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#ifdef USE_DNSTAP
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/** the dnstap environment master value, copied and changed by threads*/
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struct dt_env* dtenv;
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#endif
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struct shm_main_info* shm_info;
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/** response-ip set with associated actions and tags. */
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struct respip_set* respip_set;
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/** some response-ip tags or actions are configured if true */
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int use_response_ip;
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#ifdef USE_DNSCRYPT
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/** the dnscrypt environment */
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struct dnsc_env* dnscenv;
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#endif
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};
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/**
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* Initialize daemon structure.
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* @return: The daemon structure, or NULL on error.
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*/
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struct daemon* daemon_init(void);
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/**
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* Open shared listening ports (if needed).
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* The cfg member pointer must have been set for the daemon.
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* @param daemon: the daemon.
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* @return: false on error.
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*/
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int daemon_open_shared_ports(struct daemon* daemon);
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/**
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* Fork workers and start service.
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* When the routine exits, it is no longer forked.
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* @param daemon: the daemon.
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*/
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void daemon_fork(struct daemon* daemon);
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/**
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* Close off the worker thread information.
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* Bring the daemon back into state ready for daemon_fork again.
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* @param daemon: the daemon.
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*/
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void daemon_cleanup(struct daemon* daemon);
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/**
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* Delete workers, close listening ports.
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* @param daemon: the daemon.
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*/
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void daemon_delete(struct daemon* daemon);
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/**
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* Apply config settings.
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* @param daemon: the daemon.
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* @param cfg: new config settings.
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*/
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void daemon_apply_cfg(struct daemon* daemon, struct config_file* cfg);
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#endif /* DAEMON_H */
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