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