slirp/dnsproxy/dnsproxy.h

ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync/* $Id$ */
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync/*
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * Copyright (c) 2003,2004,2005 Armin Wolfermann
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync *
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * Permission is hereby granted, free of charge, to any person obtaining a
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * copy of this software and associated documentation files (the "Software"),
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * to deal in the Software without restriction, including without limitation
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * the rights to use, copy, modify, merge, publish, distribute, sublicense,
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * and/or sell copies of the Software, and to permit persons to whom the
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * Software is furnished to do so, subject to the following conditions:
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync *
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * The above copyright notice and this permission notice shall be included in
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * all copies or substantial portions of the Software.
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync *
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync * DEALINGS IN THE SOFTWARE.
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync */
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#ifndef _DNSPROXY_H_
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#define _DNSPROXY_H_
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync/* LONGLONG */
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#include <sys/types.h>
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#if TIME_WITH_SYS_TIME
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync# include <sys/time.h>
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync# include <time.h>
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#else
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync# if HAVE_SYS_TIME_H
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#  include <sys/time.h>
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync# else
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#  include <time.h>
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync# endif
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#endif
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#ifndef VBOX
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#include <sys/socket.h>
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#include <netinet/in.h>
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#ifdef HAVE_ARPA_INET_H
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync# include <arpa/inet.h>
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#endif
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#include <stdarg.h>
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#include <event.h>
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#ifdef DEBUG
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#define DPRINTF(x) do { printf x ; } while (0)
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#else
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#define DPRINTF(x)
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#endif
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#ifdef GLOBALS
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#define GLOBAL(a) a
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#define GLOBAL_INIT(a,b) a = b
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#else
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#define GLOBAL(a) extern a
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#define GLOBAL_INIT(a,b) extern a
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#endif
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#endif
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncstruct request {
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync    unsigned short      id;
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync    struct sockaddr_in  client;
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync    unsigned short      clientid;
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync    unsigned char       recursion;
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#ifndef VBOX
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync    struct event        timeout;
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#endif
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync    struct request      **prev;
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync    struct request      *next;
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#ifdef VBOX
5045ab9ca39fa0b301f4020b7a072406eb0ecea2vboxsync    /* this field used for saving last attempt
5045ab9ca39fa0b301f4020b7a072406eb0ecea2vboxsync     * to connect server, timeout function should change
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync     * it's value on next server. And dnsproxy_query should
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync     * initializate with first server in the list
9c49c73dd1a2b84de46465cf04f6623b7de9eedcvboxsync     *
9c49c73dd1a2b84de46465cf04f6623b7de9eedcvboxsync     * dnsgen is a generation number - a copy of pData->dnsgen at the
9c49c73dd1a2b84de46465cf04f6623b7de9eedcvboxsync     * time of request creation (poor man's weak reference).
9c49c73dd1a2b84de46465cf04f6623b7de9eedcvboxsync     * dns_server must not be used if pData->dnsgen changed.
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync     */
5045ab9ca39fa0b301f4020b7a072406eb0ecea2vboxsync    struct dns_entry    *dns_server;
2b114c590cf5a19f8047cd7bde9c7e5ae00aa22bvboxsync    uint32_t            dnsgen;
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync    int nbyte; /* length of dns request */
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync    char byte[1]; /* copy of original request */
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#endif
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync};
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#ifndef VBOX
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL_INIT(unsigned int authoritative_port, 53);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL_INIT(unsigned int authoritative_timeout, 10);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL_INIT(unsigned int recursive_port, 53);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL_INIT(unsigned int recursive_timeout, 90);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL_INIT(unsigned int stats_timeout, 3600);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL_INIT(unsigned int port, 53);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(char *authoritative);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(char *chrootdir);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(char *listenat);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(char *recursive);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(char *user);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(unsigned long active_queries);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(unsigned long all_queries);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(unsigned long authoritative_queries);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(unsigned long recursive_queries);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(unsigned long removed_queries);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(unsigned long dropped_queries);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(unsigned long answered_queries);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(unsigned long dropped_answers);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(unsigned long late_answers);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncGLOBAL(unsigned long hash_collisions);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync/* dnsproxy.c */
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncRETSIGTYPE signal_handler(int);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncint signal_event(void);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync/* daemon.c */
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncint daemon(int, int);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#endif
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync/* hash.c */
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncvoid hash_add_request(PNATState, struct request *);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncvoid hash_remove_request(PNATState, struct request *);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncstruct request *hash_find_request(PNATState, unsigned short);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync/* internal.c */
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncint add_internal(PNATState, char *);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncint is_internal(PNATState, struct in_addr);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#ifndef VBOX
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync/* log.c */
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncvoid log_syslog(const char *);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncvoid info(const char *, ...);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncvoid error(const char *, ...);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncvoid fatal(const char *, ...);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync/* parse.c */
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncint parse(const char *);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync/* statistics.c */
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncvoid statistics_start(void);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#else
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync# define DPRINTF Log2
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncint dnsproxy_init(PNATState pData);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncvoid dnsproxy_query(PNATState pData, struct socket *so, struct mbuf *m, int iphlen);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsyncvoid dnsproxy_answer(PNATState pData, struct socket *so, struct mbuf *m);
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#endif
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync
ff3658b53c4b1176414eb52b0c07e58ec9594b9bvboxsync#endif /* _DNSPROXY_H_ */