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ip.h
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ip.h
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/*
* Copyright 2010 CurveDNS Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY CurveDNS Project ``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 CurveDNS Project 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.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of CurveDNS Project.
*
*/
/*
* $Id$
* $Author$
* $Date$
* $Revision$
*/
#ifndef IP_H_
#define IP_H_
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h> /* uintx_t */
#include <sys/socket.h> /* socklen_t */
#include <netinet/in.h> /* in_addr_t, in_port_t, sockaddr_storage, htons(), ntohs() */
#include <arpa/inet.h> /* inet_pton(), inet_ntop() */
#include <fcntl.h> /* fcntl() */
#include <netdb.h> /* getaddrinfo() */
#include <ev.h> /* libev */
typedef union {
struct sockaddr sa;
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
} anysin_t;
typedef enum {
IP_PROTOCOL_UDP,
IP_PROTOCOL_TCP,
} ip_protocol_t;
struct ip_socket_t {
anysin_t *address; /* socket which is bind to */
int fd; /* fd of socket */
ip_protocol_t protocol; /* 0 = UDP, 1 = TCP */
};
extern anysin_t global_source_address;
extern anysin_t global_target_address;
extern socklen_t global_target_address_len;
extern struct ip_socket_t *global_ip_sockets;
extern int global_ip_sockets_count;
extern ev_tstamp global_ip_internal_timeout;
extern ev_tstamp global_ip_tcp_external_timeout;
extern int global_ip_tcp_max_number_connections;
extern size_t global_ip_tcp_buffersize;
extern size_t global_ip_udp_buffersize;
extern uint8_t global_ip_udp_retries;
/* IP main functions */
extern int ip_init(anysin_t *, int);
extern void ip_close();
extern int ip_bind_random(int);
extern int ip_bind(int, anysin_t *);
extern int ip_connect(int, anysin_t *);
extern int ip_nonblock(int);
extern int ip_reuse(int);
extern int ip_udp_open(int *, anysin_t *);
extern int ip_tcp_open(int *, anysin_t *);
extern int ip_tcp_close(int);
/* IP string handling */
extern int ip_parse(anysin_t *, const char *, const char *);
extern anysin_t *ip_multiple_parse(int *, const char *, const char *);
extern int ip_address_string(const anysin_t *, char *, socklen_t);
extern int ip_port_integer(const anysin_t *, uint16_t *);
extern int ip_address_total_string(const anysin_t *, char *, socklen_t);
/* IP comparison */
extern int ip_compare_address(anysin_t *, anysin_t *);
extern int ip_compare_port(anysin_t *, anysin_t *);
#endif /* IP_H_ */