1 files changed, 159 insertions, 0 deletions

diff --git a/toxcore/network.h b/toxcore/network.h
new file mode 100644
index 00000000..3547f79b
--- /dev/null
+++ b/toxcore/network.h
@@ -0,0 +1,159 @@
+/* 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef NETWORK_H
+#define NETWORK_H
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <time.h>
+
+#ifdef WIN32 /* Put win32 includes here */
+#ifndef WINVER
+//Windows XP
+#define WINVER 0x0501
+#endif
+#include <winsock2.h>
+#include <windows.h>
+#include <ws2tcpip.h>
+
+#undef VANILLA_NACL /* make sure on windows we use libsodium */
+
+#else //Linux includes
+
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <errno.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <netdb.h>
+#include <unistd.h>
+
+#endif
+
+#ifndef VANILLA_NACL
+/* we use libsodium by default */
+#include <sodium.h>
+#else
+#include <crypto_box.h>
+#define crypto_box_MACBYTES (crypto_box_ZEROBYTES - crypto_box_BOXZEROBYTES)
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define MAX_UDP_PACKET_SIZE 65507
+
+#define NET_PACKET_PING_REQUEST    0   /* Ping request packet ID */
+#define NET_PACKET_PING_RESPONSE   1   /* Ping response packet ID */
+#define NET_PACKET_GET_NODES       2   /* Get nodes request packet ID */
+#define NET_PACKET_SEND_NODES      3   /* Send nodes response packet ID */
+#define NET_PACKET_HANDSHAKE       16  /* Handshake packet ID */
+#define NET_PACKET_SYNC            17  /* SYNC packet ID */
+#define NET_PACKET_DATA            18  /* Data packet ID */
+#define NET_PACKET_CRYPTO          32  /* Encrypted data packet ID */
+#define NET_PACKET_LAN_DISCOVERY   33  /* LAN discovery packet ID */
+
+
+/* Current time, unix format */
+#define unix_time() ((uint64_t)time(NULL))
+
+
+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;
+
+/* Function to receive data, ip and port of sender is put into ip_port
+    the packet data into data
+    the packet length into length. */
+typedef int (*packet_handler_callback)(void *object, IP_Port ip_port, uint8_t *data, uint32_t len);
+
+typedef struct {
+    packet_handler_callback function;
+    void *object;
+} Packet_Handles;
+
+typedef struct {
+    Packet_Handles packethandlers[256];
+    /* our UDP socket */
+    int sock;
+} Networking_Core;
+
+/* returns current time in milleseconds since the epoch. */
+uint64_t current_time(void);
+
+/* return a random number
+    NOTE: this function should probably not be used where cryptographic randomness is absolutely necessary */
+uint32_t random_int(void);
+
+/* Basic network functions: */
+
+/* Function to send packet(data) of length length to ip_port */
+int sendpacket(int sock, IP_Port ip_port, uint8_t *data, uint32_t length);
+
+/* Function to call when packet beginning with byte is received */
+void networking_registerhandler(Networking_Core *net, uint8_t byte, packet_handler_callback cb, void *object);
+
+/* call this several times a second */
+void networking_poll(Networking_Core *net);
+
+/* 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
+    returns -1 if there were problems */
+Networking_Core *new_networking(IP ip, uint16_t port);
+
+/* function to cleanup networking stuff(doesn't do much right now) */
+void kill_networking(Networking_Core *net);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif