add basic server connection functions

projects/openrct2.vcxproj

@@ -75,6 +75,7 @@
     <ClCompile Include="..\src\management\research.c" />
     <ClCompile Include="..\src\network\http.cpp" />
     <ClCompile Include="..\src\network\twitch.cpp" />
+    <ClCompile Include="..\src\network\network.c" />
     <ClCompile Include="..\src\object.c" />
     <ClCompile Include="..\src\object_list.c" />
     <ClCompile Include="..\src\openrct2.c" />
@@ -230,6 +231,7 @@
     <ClInclude Include="..\src\management\research.h" />
     <ClInclude Include="..\src\network\http.h" />
     <ClInclude Include="..\src\network\twitch.h" />
+    <ClInclude Include="..\src\network\network.h" />
     <ClInclude Include="..\src\object.h" />
     <ClInclude Include="..\src\openrct2.h" />
     <ClInclude Include="..\src\peep\peep.h" />

projects/openrct2.vcxproj.filters

@@ -498,6 +498,9 @@
     <ClCompile Include="..\src\localisation\convert.c">
       <Filter>Source\Localisation</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\network\network.c">
+      <Filter>Source\Network</Filter>
+    </ClCompile>
     <ClCompile Include="..\src\drawing\scrolling_text.c">
       <Filter>Source\Drawing</Filter>
     </ClCompile>
@@ -740,5 +743,8 @@
     <ClInclude Include="..\src\drawing\font.h">
       <Filter>Source\Drawing</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\network\network.h">
+      <Filter>Source\Network</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>

src/network/network.c

@@ -0,0 +1,111 @@
+/*****************************************************************************
+ * Copyright (c) 2014 Ted John
+ * OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
+ *
+ * This file is part of OpenRCT2.
+ *
+ * OpenRCT2 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.
+ 
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *****************************************************************************/
+
+#ifndef DISABLE_NETWORK
+
+#include "network.h"
+
+#pragma comment(lib, "Ws2_32.lib")
+
+static int _wsaInitialised = 0;
+static WSADATA _wsaData;
+static SOCKET _clientSocket;
+
+int network_init()
+{
+	if (!_wsaInitialised) {
+		log_verbose("Initialising WSA");
+		if (WSAStartup(MAKEWORD(2, 2), &_wsaData) != 0) {
+			log_error("Unable to initialise winsock.");
+			return 0;
+		}
+		_wsaInitialised = 1;
+	}
+
+	return 1;
+}
+
+void network_close()
+{
+	log_verbose("Closing WSA");
+	WSACleanup();
+	_wsaInitialised = 0;
+}
+
+int network_begin_server(int port)
+{
+	SOCKET listeningSocket;
+	SOCKADDR_IN localAddress;
+
+	if (!network_init())
+		return 0;
+
+	log_verbose("Begin listening for clients");
+	listeningSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+	if (listeningSocket == INVALID_SOCKET) {
+		log_error("Unable to create socket.");
+		return 0;
+	}
+
+	localAddress.sin_family = AF_INET;
+	localAddress.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
+	localAddress.sin_port = htons(port);
+
+	if (bind(listeningSocket, (SOCKADDR*)&localAddress, sizeof(SOCKADDR_IN)) != 0) {
+		closesocket(listeningSocket);
+		log_error("Unable to bind to socket.");
+		return 0;
+	}
+
+	if (listen(listeningSocket, SOMAXCONN) != 0) {
+		closesocket(listeningSocket);
+		log_error("Unable to listen on socket.");
+		return 0;
+	}
+
+	printf("Waiting for client...\n");
+	_clientSocket = accept(listeningSocket, NULL, NULL);
+	if (_clientSocket == INVALID_SOCKET) {
+		closesocket(listeningSocket);
+		log_error("Failed to accept client.");
+		return 0;
+	}
+
+	closesocket(listeningSocket);
+	printf("Connected to client!");
+	return 1;
+}
+
+void network_end_server()
+{
+	closesocket(_clientSocket);
+}
+
+int network_send_data(uint8 *data, int length)
+{
+	return send(_clientSocket, data, length, 0);
+}
+
+int network_receive_data(uint8 *data, int maxLength)
+{
+	return recv(_clientSocket, data, maxLength, 0);
+}
+
+#endif /* DISABLE_NETWORK */

src/network/network.h

@@ -0,0 +1,42 @@
+/*****************************************************************************
+ * Copyright (c) 2014 Ted John
+ * OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
+ *
+ * This file is part of OpenRCT2.
+ *
+ * OpenRCT2 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.
+ 
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *****************************************************************************/
+
+#ifndef _NETWORK_H_
+#define _NETWORK_H_
+
+#ifndef DISABLE_NETWORK
+
+#include <winsock.h>
+
+#include "../common.h"
+
+#define NETWORK_DEFAULT_PORT 11753
+
+int network_init();
+void network_close();
+int network_begin_server(int port);
+void network_end_server();
+
+int network_send_data(uint8 *data, int length);
+int network_receive_data(uint8 *data, int maxLength);
+
+#endif /* DISABLE_NETWORK */
+
+#endif