181 lines
5.4 KiB
C
181 lines
5.4 KiB
C
/*
|
|
* daemon/daemon.h - collection of workers that handles requests.
|
|
*
|
|
* Copyright (c) 2007, NLnet Labs. All rights reserved.
|
|
*
|
|
* This software is open source.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
*
|
|
* Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* Neither the name of the NLNET LABS nor the names of its contributors may
|
|
* be used to endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
|
|
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
*
|
|
* The daemon consists of global settings and a number of workers.
|
|
*/
|
|
|
|
#ifndef DAEMON_H
|
|
#define DAEMON_H
|
|
|
|
#include "util/locks.h"
|
|
#include "util/alloc.h"
|
|
#include "services/modstack.h"
|
|
struct config_file;
|
|
struct worker;
|
|
struct listen_port;
|
|
struct slabhash;
|
|
struct module_env;
|
|
struct rrset_cache;
|
|
struct acl_list;
|
|
struct local_zones;
|
|
struct views;
|
|
struct ub_randstate;
|
|
struct daemon_remote;
|
|
struct respip_set;
|
|
struct shm_main_info;
|
|
|
|
#include "dnstap/dnstap_config.h"
|
|
#ifdef USE_DNSTAP
|
|
struct dt_env;
|
|
#endif
|
|
|
|
#include "dnscrypt/dnscrypt_config.h"
|
|
#ifdef USE_DNSCRYPT
|
|
struct dnsc_env;
|
|
#endif
|
|
|
|
/**
|
|
* Structure holding worker list.
|
|
* Holds globally visible information.
|
|
*/
|
|
struct daemon {
|
|
/** The config settings */
|
|
struct config_file* cfg;
|
|
/** the chroot dir in use, NULL if none */
|
|
char* chroot;
|
|
/** pidfile that is used */
|
|
char* pidfile;
|
|
/** port number that has ports opened. */
|
|
int listening_port;
|
|
/** array of listening ports, opened. Listening ports per worker,
|
|
* or just one element[0] shared by the worker threads. */
|
|
struct listen_port** ports;
|
|
/** size of ports array */
|
|
size_t num_ports;
|
|
/** reuseport is enabled if true */
|
|
int reuseport;
|
|
/** port number for remote that has ports opened. */
|
|
int rc_port;
|
|
/** listening ports for remote control */
|
|
struct listen_port* rc_ports;
|
|
/** remote control connections management (for first worker) */
|
|
struct daemon_remote* rc;
|
|
/** ssl context for listening to dnstcp over ssl, and connecting ssl */
|
|
void* listen_sslctx, *connect_sslctx;
|
|
/** num threads allocated */
|
|
int num;
|
|
/** the worker entries */
|
|
struct worker** workers;
|
|
/** do we need to exit unbound (or is it only a reload?) */
|
|
int need_to_exit;
|
|
/** master random table ; used for port div between threads on reload*/
|
|
struct ub_randstate* rand;
|
|
/** master allocation cache */
|
|
struct alloc_cache superalloc;
|
|
/** the module environment master value, copied and changed by threads*/
|
|
struct module_env* env;
|
|
/** stack of module callbacks */
|
|
struct module_stack mods;
|
|
/** access control, which client IPs are allowed to connect */
|
|
struct acl_list* acl;
|
|
/** local authority zones */
|
|
struct local_zones* local_zones;
|
|
/** last time of statistics printout */
|
|
struct timeval time_last_stat;
|
|
/** time when daemon started */
|
|
struct timeval time_boot;
|
|
/** views structure containing view tree */
|
|
struct views* views;
|
|
#ifdef USE_DNSTAP
|
|
/** the dnstap environment master value, copied and changed by threads*/
|
|
struct dt_env* dtenv;
|
|
#endif
|
|
struct shm_main_info* shm_info;
|
|
/** response-ip set with associated actions and tags. */
|
|
struct respip_set* respip_set;
|
|
/** some response-ip tags or actions are configured if true */
|
|
int use_response_ip;
|
|
#ifdef USE_DNSCRYPT
|
|
/** the dnscrypt environment */
|
|
struct dnsc_env* dnscenv;
|
|
#endif
|
|
};
|
|
|
|
/**
|
|
* Initialize daemon structure.
|
|
* @return: The daemon structure, or NULL on error.
|
|
*/
|
|
struct daemon* daemon_init(void);
|
|
|
|
/**
|
|
* Open shared listening ports (if needed).
|
|
* The cfg member pointer must have been set for the daemon.
|
|
* @param daemon: the daemon.
|
|
* @return: false on error.
|
|
*/
|
|
int daemon_open_shared_ports(struct daemon* daemon);
|
|
|
|
/**
|
|
* Fork workers and start service.
|
|
* When the routine exits, it is no longer forked.
|
|
* @param daemon: the daemon.
|
|
*/
|
|
void daemon_fork(struct daemon* daemon);
|
|
|
|
/**
|
|
* Close off the worker thread information.
|
|
* Bring the daemon back into state ready for daemon_fork again.
|
|
* @param daemon: the daemon.
|
|
*/
|
|
void daemon_cleanup(struct daemon* daemon);
|
|
|
|
/**
|
|
* Delete workers, close listening ports.
|
|
* @param daemon: the daemon.
|
|
*/
|
|
void daemon_delete(struct daemon* daemon);
|
|
|
|
/**
|
|
* Apply config settings.
|
|
* @param daemon: the daemon.
|
|
* @param cfg: new config settings.
|
|
*/
|
|
void daemon_apply_cfg(struct daemon* daemon, struct config_file* cfg);
|
|
|
|
#endif /* DAEMON_H */
|