1 files changed, 75 insertions, 0 deletions

diff --git a/toxcore/TCP_server.h b/toxcore/TCP_server.h
new file mode 100644
index 00000000..89ccb50f
--- /dev/null
+++ b/toxcore/TCP_server.h
@@ -0,0 +1,75 @@
+/*
+* TCP_server.h -- Implementation of the TCP relay server part of Tox.
+*
+*  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/>.
+*
+*/
+
+#include "net_crypto.h"
+
+#define MAX_INCOMMING_CONNECTIONS 32
+
+#define TCP_MAX_BACKLOG MAX_INCOMMING_CONNECTIONS
+
+#define MAX_PACKET_SIZE 8192
+
+#define TCP_HANDSHAKE_PLAIN_SIZE (crypto_box_PUBLICKEYBYTES + crypto_box_NONCEBYTES)
+#define TCP_SERVER_HANDSHAKE_SIZE (crypto_box_NONCEBYTES + TCP_HANDSHAKE_PLAIN_SIZE + crypto_box_MACBYTES)
+#define TCP_CLIENT_HANDSHAKE_SIZE (crypto_box_PUBLICKEYBYTES + TCP_SERVER_HANDSHAKE_SIZE)
+
+enum {
+    TCP_STATUS_NO_STATUS,
+    TCP_STATUS_CONNECTED,
+    TCP_STATUS_UNCONFIRMED,
+    TCP_STATUS_CONFIRMED,
+};
+
+typedef struct {
+    uint8_t status;
+    sock_t  sock;
+    uint8_t public_key[crypto_box_PUBLICKEYBYTES];
+    uint8_t recv_nonce[crypto_box_NONCEBYTES]; /* Nonce of received packets. */
+    uint8_t sent_nonce[crypto_box_NONCEBYTES]; /* Nonce of sent packets. */
+    uint8_t shared_key[crypto_box_BEFORENMBYTES];
+    uint16_t next_packet_length;
+} TCP_Secure_Connection;
+
+typedef struct {
+    sock_t *socks_listening;
+    unsigned int num_listening_socks;
+
+    uint8_t public_key[crypto_box_PUBLICKEYBYTES];
+    uint8_t secret_key[crypto_box_SECRETKEYBYTES];
+    TCP_Secure_Connection incomming_connection_queue[MAX_INCOMMING_CONNECTIONS];
+    uint16_t incomming_connection_queue_index;
+    TCP_Secure_Connection unconfirmed_connection_queue[MAX_INCOMMING_CONNECTIONS];
+    uint16_t unconfirmed_connection_queue_index;
+} TCP_Server;
+
+/* Create new TCP server instance.
+ */
+TCP_Server *new_TCP_server(uint8_t ipv6_enabled, uint16_t num_sockets, uint16_t *ports, uint8_t *public_key,
+                           uint8_t *secret_key);
+
+/* Run the TCP_server
+ */
+void do_TCP_server(TCP_Server *TCP_server);
+
+/* Kill the TCP server
+ */
+void kill_TCP_server(TCP_Server *TCP_server);