mirror of
https://github.com/irungentoo/toxcore.git
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135 lines
3.3 KiB
C
135 lines
3.3 KiB
C
/* network.h
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*
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* Datatypes, functions and includes for the core networking.
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*
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* Copyright (C) 2013 Tox project All Rights Reserved.
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*
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* This file is part of Tox.
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*
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* Tox is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Tox is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Tox. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef NETWORK_H
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#define NETWORK_H
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <time.h>
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#ifdef WIN32 /* Put win32 includes here */
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//Windows XP
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#define WINVER 0x0501
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#include <winsock2.h>
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#include <windows.h>
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#include <ws2tcpip.h>
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#undef VANILLA_NACL /* make sure on windows we use libsodium */
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#else //Linux includes
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#include <fcntl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <errno.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <netdb.h>
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#include <unistd.h>
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#endif
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#ifndef VANILLA_NACL
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/* we use libsodium by default */
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#include <sodium.h>
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#else
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/* TODO: Including stuff like this is bad. This needs fixing.
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We keep support for the original NaCl for now. */
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#include "../nacl/build/Linux/include/amd64/crypto_box.h"
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAX_UDP_PACKET_SIZE 65507
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typedef union {
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uint8_t c[4];
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uint16_t s[2];
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uint32_t i;
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} IP;
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typedef struct {
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IP ip;
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uint16_t port;
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/* not used for anything right now */
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uint16_t padding;
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} IP_Port;
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typedef struct {
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int16_t family;
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uint16_t port;
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IP ip;
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uint8_t zeroes[8];
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#ifdef ENABLE_IPV6
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uint8_t zeroes2[12];
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#endif
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} ADDR;
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/* returns current time in milleseconds since the epoch. */
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uint64_t current_time();
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/* return a random number
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NOTE: this function should probably not be used where cryptographic randomness is absolutely necessary */
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uint32_t random_int();
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/* Basic network functions: */
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/* Function to send packet(data) of length length to ip_port */
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int sendpacket(IP_Port ip_port, uint8_t *data, uint32_t length);
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/* Function to receive data, ip and port of sender is put into ip_port
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the packet data into data
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the packet length into length. */
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int receivepacket(IP_Port *ip_port, uint8_t *data, uint32_t *length);
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/* initialize networking
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bind to ip and port
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ip must be in network order EX: 127.0.0.1 = (7F000001)
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port is in host byte order (this means don't worry about it)
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returns 0 if no problems
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returns -1 if there were problems */
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int init_networking(IP ip, uint16_t port);
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/* function to cleanup networking stuff(doesn't do much right now) */
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void shutdown_networking();
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/* resolves provided address to a binary data in network byte order
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address is ASCII null terminated string
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address should represent IPv4, IPv6 or a hostname
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on success returns a data in network byte order that can be used to set IP.i or IP_Port.ip.i
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on failure returns -1 */
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int resolve_addr(const char *address);
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#ifdef __cplusplus
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}
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#endif
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#endif
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