1 files changed, 143 insertions, 0 deletions
diff --git a/tinyNET/src/tnet.c b/tinyNET/src/tnet.c
new file mode 100644
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+/*
+* Copyright (C) 2009-2010 Mamadou Diop.
+*
+* Contact: Mamadou Diop <diopmamadou(at)doubango.org>
+*	
+* This file is part of Open Source Doubango Framework.
+*
+* DOUBANGO 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.
+*	
+* DOUBANGO 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 DOUBANGO.
+*
+*/
+
+/**@file tnet.c
+ * @brief Network stack.
+ *
+ * @author Mamadou Diop <diopmamadou(at)doubango.org>
+ *
+ * @date Created: Sat Nov 8 16:54:58 2009 mdiop
+ */
+#include "tnet.h"
+#include "tnet_utils.h" 
+
+#include "tsk_time.h"
+#include "tsk_debug.h"
+
+#include <stdlib.h> /* srand */
+
+/** @mainpage tinyNET API Overview
+*
+* <h1>10 Sockets and Network Functions</h1>
+*
+* All network functions are part of tinyNET projects.<br>
+* You MUST call @ref tnet_startup() before using any network function (tnet_*). tnet_cleanup() is used to terminate use of network functions. <br>
+* The startup function will determine whether the host is a ìlittle-endianî machine or not (at runtime).
+*
+* ======
+*
+* - @ref tnet_socket_group 
+* - @ref tnet_utils_group
+* - @ref tnet_dhcp_group
+* - @ref tnet_dhcp6_group
+* - @ref tnet_dns_group
+* - @ref tnet_nat_group (@ref tnet_stun_group, @ref tnet_turn_group, ICE)
+*
+* ======
+*
+*/
+static tsk_bool_t __tnet_started = tsk_false;
+tsk_bool_t tnet_isBigEndian = tsk_false;
+
+/**
+ * @fn tnet_startup
+ * This is probably the most important function. You MUST call this function to initialize the network stack before calling any <b>tnet_*</b> function. 
+ *			You MUST call @ref tnet_cleanup to cleanup the network stack.
+ *
+ * @sa @ref tnet_cleanup.
+ * @return	Zero if succeed and error code otherwise. 
+**/
+int tnet_startup()
+{
+	int err = 0;
+	short word = 0x4321;
+
+	if(__tnet_started){
+		goto bail;
+	}
+
+	// rand()
+	srand((unsigned int) tsk_time_epoch());
+
+	// endianness
+	tnet_isBigEndian = ((*(int8_t *)&word) != 0x21);
+#if TNET_UNDER_WINDOWS
+	if(tnet_isBigEndian){
+		TSK_DEBUG_ERROR("Big endian on Windows machine. Is it right?");
+	}
+#endif
+
+#if TNET_UNDER_WINDOWS
+	{
+		WORD wVersionRequested;
+		WSADATA wsaData;
+
+		wVersionRequested = MAKEWORD(2, 2);
+
+		err = WSAStartup(wVersionRequested, &wsaData);
+		if (err != 0) {
+			TSK_DEBUG_FATAL("WSAStartup failed with error: %d\n", err);
+			return -1;
+		}
+
+		if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2){
+			TSK_DEBUG_FATAL("Could not find a usable version of Winsock.dll\n");
+			tnet_cleanup();
+			return -2;
+		}
+		else{
+			__tnet_started = tsk_true;
+			TSK_DEBUG_INFO("The Winsock 2.2 dll was found okay\n");
+		}
+	}
+#else
+	__tnet_started = tsk_true;
+#endif /* TNET_UNDER_WINDOWS */
+	
+bail:
+	return err;
+}
+
+
+/**
+ * Cleanup the network stack.
+ *
+ * @sa @ref tnet_startup.
+ * @retval	Zero if succeed and non-zero error code otherwise.
+**/
+int tnet_cleanup()
+{
+	if(!__tnet_started){
+		goto bail;
+	}
+
+#if TNET_UNDER_WINDOWS
+	__tnet_started = tsk_false;
+	return WSACleanup();
+#else
+	__tnet_started = tsk_false;
+#endif
+
+bail:
+	return 0;
+}
+